gpu/config/gpu_control_list.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/config/gpu_control_list.h"
   6
   7 #include "base/cpu.h"
   8 #include "base/json/json_reader.h"
   9 #include "base/logging.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/string_split.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/sys_info.h"
  14 #include "gpu/config/gpu_info.h"
  15 #include "gpu/config/gpu_util.h"
  16
  17 namespace gpu {
  18 namespace {
  19
  20 // Break a version string into segments.  Return true if each segment is
  21 // a valid number.
  22 bool ProcessVersionString(const std::string& version_string,
  23                           char splitter,
  24                           std::vector<std::string>* version) {
  25   DCHECK(version);
  26   base::SplitString(version_string, splitter, version);
  27   if (version->size() == 0)
  28     return false;
  29   // If the splitter is '-', we assume it's a date with format "mm-dd-yyyy";
  30   // we split it into the order of "yyyy", "mm", "dd".
  31   if (splitter == '-') {
  32     std::string year = (*version)[version->size() - 1];
  33     for (int i = version->size() - 1; i > 0; --i) {
  34       (*version)[i] = (*version)[i - 1];
  35     }
  36     (*version)[0] = year;
  37   }
  38   for (size_t i = 0; i < version->size(); ++i) {
  39     unsigned num = 0;
  40     if (!base::StringToUint((*version)[i], &num))
  41       return false;
  42   }
  43   return true;
  44 }
  45
  46 // Compare two number strings using numerical ordering.
  47 // Return  0 if number = number_ref,
  48 //         1 if number > number_ref,
  49 //        -1 if number < number_ref.
  50 int CompareNumericalNumberStrings(
  51     const std::string& number, const std::string& number_ref) {
  52   unsigned value1 = 0;
  53   unsigned value2 = 0;
  54   bool valid = base::StringToUint(number, &value1);
  55   DCHECK(valid);
  56   valid = base::StringToUint(number_ref, &value2);
  57   DCHECK(valid);
  58   if (value1 == value2)
  59     return 0;
  60   if (value1 > value2)
  61     return 1;
  62   return -1;
  63 }
  64
  65 // Compare two number strings using lexical ordering.
  66 // Return  0 if number = number_ref,
  67 //         1 if number > number_ref,
  68 //        -1 if number < number_ref.
  69 // We only compare as many digits as number_ref contains.
  70 // If number_ref is xxx, it's considered as xxx*
  71 // For example: CompareLexicalNumberStrings("121", "12") returns 0,
  72 //              CompareLexicalNumberStrings("12", "121") returns -1.
  73 int CompareLexicalNumberStrings(
  74     const std::string& number, const std::string& number_ref) {
  75   for (size_t i = 0; i < number_ref.length(); ++i) {
  76     unsigned value1 = 0;
  77     if (i < number.length())
  78       value1 = number[i] - '0';
  79     unsigned value2 = number_ref[i] - '0';
  80     if (value1 > value2)
  81       return 1;
  82     if (value1 < value2)
  83       return -1;
  84   }
  85   return 0;
  86 }
  87
  88 bool GpuUnmatched(uint32 vendor_id, const std::vector<uint32>& device_id_list,
  89                   const GPUInfo::GPUDevice& gpu) {
  90   if (vendor_id == 0)
  91     return false;
  92   if (vendor_id != gpu.vendor_id)
  93     return true;
  94   bool device_specified = false;
  95   for (size_t i = 0; i < device_id_list.size(); ++i) {
  96     if (device_id_list[i] == 0)
  97       continue;
  98     if (device_id_list[i] == gpu.device_id)
  99       return false;
 100     device_specified = true;
 101   }
 102   return device_specified;
 103 }
 104
 105 const char kMultiGpuStyleStringAMDSwitchable[] = "amd_switchable";
 106 const char kMultiGpuStyleStringOptimus[] = "optimus";
 107
 108 const char kMultiGpuCategoryStringPrimary[] = "primary";
 109 const char kMultiGpuCategoryStringSecondary[] = "secondary";
 110 const char kMultiGpuCategoryStringAny[] = "any";
 111
 112 const char kVersionStyleStringNumerical[] = "numerical";
 113 const char kVersionStyleStringLexical[] = "lexical";
 114
 115 const char kOp[] = "op";
 116
 117 }  // namespace anonymous
 118
 119 GpuControlList::VersionInfo::VersionInfo(
 120     const std::string& version_op,
 121     const std::string& version_style,
 122     const std::string& version_string,
 123     const std::string& version_string2)
 124     : version_style_(kVersionStyleNumerical) {
 125   op_ = StringToNumericOp(version_op);
 126   if (op_ == kUnknown || op_ == kAny)
 127     return;
 128   version_style_ = StringToVersionStyle(version_style);
 129   if (!ProcessVersionString(version_string, '.', &version_)) {
 130     op_ = kUnknown;
 131     return;
 132   }
 133   if (op_ == kBetween) {
 134     if (!ProcessVersionString(version_string2, '.', &version2_))
 135       op_ = kUnknown;
 136   }
 137 }
 138
 139 GpuControlList::VersionInfo::~VersionInfo() {
 140 }
 141
 142 bool GpuControlList::VersionInfo::Contains(
 143     const std::string& version_string) const {
 144   return Contains(version_string, '.');
 145 }
 146
 147 bool GpuControlList::VersionInfo::Contains(
 148     const std::string& version_string, char splitter) const {
 149   if (op_ == kUnknown)
 150     return false;
 151   if (op_ == kAny)
 152     return true;
 153   std::vector<std::string> version;
 154   if (!ProcessVersionString(version_string, splitter, &version))
 155     return false;
 156   int relation = Compare(version, version_, version_style_);
 157   if (op_ == kEQ)
 158     return (relation == 0);
 159   else if (op_ == kLT)
 160     return (relation < 0);
 161   else if (op_ == kLE)
 162     return (relation <= 0);
 163   else if (op_ == kGT)
 164     return (relation > 0);
 165   else if (op_ == kGE)
 166     return (relation >= 0);
 167   // op_ == kBetween
 168   if (relation < 0)
 169     return false;
 170   return Compare(version, version2_, version_style_) <= 0;
 171 }
 172
 173 bool GpuControlList::VersionInfo::IsValid() const {
 174   return (op_ != kUnknown && version_style_ != kVersionStyleUnknown);
 175 }
 176
 177 bool GpuControlList::VersionInfo::IsLexical() const {
 178   return version_style_ == kVersionStyleLexical;
 179 }
 180
 181 // static
 182 int GpuControlList::VersionInfo::Compare(
 183     const std::vector<std::string>& version,
 184     const std::vector<std::string>& version_ref,
 185     VersionStyle version_style) {
 186   DCHECK(version.size() > 0 && version_ref.size() > 0);
 187   DCHECK(version_style != kVersionStyleUnknown);
 188   for (size_t i = 0; i < version_ref.size(); ++i) {
 189     if (i >= version.size())
 190       return 0;
 191     int ret = 0;
 192     // We assume both versions are checked by ProcessVersionString().
 193     if (i > 0 && version_style == kVersionStyleLexical)
 194       ret = CompareLexicalNumberStrings(version[i], version_ref[i]);
 195     else
 196       ret = CompareNumericalNumberStrings(version[i], version_ref[i]);
 197     if (ret != 0)
 198       return ret;
 199   }
 200   return 0;
 201 }
 202
 203 // static
 204 GpuControlList::VersionInfo::VersionStyle
 205 GpuControlList::VersionInfo::StringToVersionStyle(
 206     const std::string& version_style) {
 207   if (version_style.empty() || version_style == kVersionStyleStringNumerical)
 208     return kVersionStyleNumerical;
 209   if (version_style == kVersionStyleStringLexical)
 210     return kVersionStyleLexical;
 211   return kVersionStyleUnknown;
 212 }
 213
 214 GpuControlList::OsInfo::OsInfo(const std::string& os,
 215                              const std::string& version_op,
 216                              const std::string& version_string,
 217                              const std::string& version_string2) {
 218   type_ = StringToOsType(os);
 219   if (type_ != kOsUnknown) {
 220     version_info_.reset(new VersionInfo(
 221         version_op, std::string(), version_string, version_string2));
 222   }
 223 }
 224
 225 GpuControlList::OsInfo::~OsInfo() {}
 226
 227 bool GpuControlList::OsInfo::Contains(OsType type,
 228                                     const std::string& version) const {
 229   if (!IsValid())
 230     return false;
 231   if (type_ != type && type_ != kOsAny)
 232     return false;
 233   return version_info_->Contains(version);
 234 }
 235
 236 bool GpuControlList::OsInfo::IsValid() const {
 237   return type_ != kOsUnknown && version_info_->IsValid();
 238 }
 239
 240 GpuControlList::OsType GpuControlList::OsInfo::type() const {
 241   return type_;
 242 }
 243
 244 GpuControlList::OsType GpuControlList::OsInfo::StringToOsType(
 245     const std::string& os) {
 246   if (os == "win")
 247     return kOsWin;
 248   else if (os == "macosx")
 249     return kOsMacosx;
 250   else if (os == "android")
 251     return kOsAndroid;
 252   else if (os == "linux")
 253     return kOsLinux;
 254   else if (os == "chromeos")
 255     return kOsChromeOS;
 256   else if (os == "any")
 257     return kOsAny;
 258   return kOsUnknown;
 259 }
 260
 261 GpuControlList::MachineModelInfo::MachineModelInfo(
 262     const std::string& name_op,
 263     const std::string& name_value,
 264     const std::string& version_op,
 265     const std::string& version_string,
 266     const std::string& version_string2) {
 267   name_info_.reset(new StringInfo(name_op, name_value));
 268   version_info_.reset(new VersionInfo(
 269       version_op, std::string(), version_string, version_string2));
 270 }
 271
 272 GpuControlList::MachineModelInfo::~MachineModelInfo() {}
 273
 274 bool GpuControlList::MachineModelInfo::Contains(
 275     const std::string& name, const std::string& version) const {
 276   if (!IsValid())
 277     return false;
 278   if (!name_info_->Contains(name))
 279     return false;
 280   return version_info_->Contains(version);
 281 }
 282
 283 bool GpuControlList::MachineModelInfo::IsValid() const {
 284   return name_info_->IsValid() && version_info_->IsValid();
 285 }
 286
 287 GpuControlList::StringInfo::StringInfo(const std::string& string_op,
 288                                      const std::string& string_value) {
 289   op_ = StringToOp(string_op);
 290   value_ = StringToLowerASCII(string_value);
 291 }
 292
 293 bool GpuControlList::StringInfo::Contains(const std::string& value) const {
 294   std::string my_value = StringToLowerASCII(value);
 295   switch (op_) {
 296     case kContains:
 297       return strstr(my_value.c_str(), value_.c_str()) != NULL;
 298     case kBeginWith:
 299       return StartsWithASCII(my_value, value_, false);
 300     case kEndWith:
 301       return EndsWith(my_value, value_, false);
 302     case kEQ:
 303       return value_ == my_value;
 304     default:
 305       return false;
 306   }
 307 }
 308
 309 bool GpuControlList::StringInfo::IsValid() const {
 310   return op_ != kUnknown;
 311 }
 312
 313 GpuControlList::StringInfo::Op GpuControlList::StringInfo::StringToOp(
 314     const std::string& string_op) {
 315   if (string_op == "=")
 316     return kEQ;
 317   else if (string_op == "contains")
 318     return kContains;
 319   else if (string_op == "beginwith")
 320     return kBeginWith;
 321   else if (string_op == "endwith")
 322     return kEndWith;
 323   return kUnknown;
 324 }
 325
 326 GpuControlList::FloatInfo::FloatInfo(const std::string& float_op,
 327                                      const std::string& float_value,
 328                                      const std::string& float_value2)
 329     : op_(kUnknown),
 330       value_(0.f),
 331       value2_(0.f) {
 332   op_ = StringToNumericOp(float_op);
 333   if (op_ == kAny)
 334     return;
 335   double dvalue = 0;
 336   if (!base::StringToDouble(float_value, &dvalue)) {
 337     op_ = kUnknown;
 338     return;
 339   }
 340   value_ = static_cast<float>(dvalue);
 341   if (op_ == kBetween) {
 342     if (!base::StringToDouble(float_value2, &dvalue)) {
 343       op_ = kUnknown;
 344       return;
 345     }
 346     value2_ = static_cast<float>(dvalue);
 347   }
 348 }
 349
 350 bool GpuControlList::FloatInfo::Contains(float value) const {
 351   if (op_ == kUnknown)
 352     return false;
 353   if (op_ == kAny)
 354     return true;
 355   if (op_ == kEQ)
 356     return (value == value_);
 357   if (op_ == kLT)
 358     return (value < value_);
 359   if (op_ == kLE)
 360     return (value <= value_);
 361   if (op_ == kGT)
 362     return (value > value_);
 363   if (op_ == kGE)
 364     return (value >= value_);
 365   DCHECK(op_ == kBetween);
 366   return ((value_ <= value && value <= value2_) ||
 367           (value2_ <= value && value <= value_));
 368 }
 369
 370 bool GpuControlList::FloatInfo::IsValid() const {
 371   return op_ != kUnknown;
 372 }
 373
 374 GpuControlList::IntInfo::IntInfo(const std::string& int_op,
 375                                  const std::string& int_value,
 376                                  const std::string& int_value2)
 377     : op_(kUnknown),
 378       value_(0),
 379       value2_(0) {
 380   op_ = StringToNumericOp(int_op);
 381   if (op_ == kAny)
 382     return;
 383   if (!base::StringToInt(int_value, &value_)) {
 384     op_ = kUnknown;
 385     return;
 386   }
 387   if (op_ == kBetween &&
 388       !base::StringToInt(int_value2, &value2_))
 389     op_ = kUnknown;
 390 }
 391
 392 bool GpuControlList::IntInfo::Contains(int value) const {
 393   if (op_ == kUnknown)
 394     return false;
 395   if (op_ == kAny)
 396     return true;
 397   if (op_ == kEQ)
 398     return (value == value_);
 399   if (op_ == kLT)
 400     return (value < value_);
 401   if (op_ == kLE)
 402     return (value <= value_);
 403   if (op_ == kGT)
 404     return (value > value_);
 405   if (op_ == kGE)
 406     return (value >= value_);
 407   DCHECK(op_ == kBetween);
 408   return ((value_ <= value && value <= value2_) ||
 409           (value2_ <= value && value <= value_));
 410 }
 411
 412 bool GpuControlList::IntInfo::IsValid() const {
 413   return op_ != kUnknown;
 414 }
 415
 416 // static
 417 GpuControlList::ScopedGpuControlListEntry
 418 GpuControlList::GpuControlListEntry::GetEntryFromValue(
 419     const base::DictionaryValue* value, bool top_level,
 420     const FeatureMap& feature_map,
 421     bool supports_feature_type_all) {
 422   DCHECK(value);
 423   ScopedGpuControlListEntry entry(new GpuControlListEntry());
 424
 425   size_t dictionary_entry_count = 0;
 426
 427   if (top_level) {
 428     uint32 id;
 429     if (!value->GetInteger("id", reinterpret_cast<int*>(&id)) ||
 430         !entry->SetId(id)) {
 431       LOG(WARNING) << "Malformed id entry " << entry->id();
 432       return NULL;
 433     }
 434     dictionary_entry_count++;
 435
 436     bool disabled;
 437     if (value->GetBoolean("disabled", &disabled)) {
 438       entry->SetDisabled(disabled);
 439       dictionary_entry_count++;
 440     }
 441   }
 442
 443   std::string description;
 444   if (value->GetString("description", &description)) {
 445     entry->description_ = description;
 446     dictionary_entry_count++;
 447   } else {
 448     entry->description_ = "The GPU is unavailable for an unexplained reason.";
 449   }
 450
 451   const base::ListValue* cr_bugs;
 452   if (value->GetList("cr_bugs", &cr_bugs)) {
 453     for (size_t i = 0; i < cr_bugs->GetSize(); ++i) {
 454       int bug_id;
 455       if (cr_bugs->GetInteger(i, &bug_id)) {
 456         entry->cr_bugs_.push_back(bug_id);
 457       } else {
 458         LOG(WARNING) << "Malformed cr_bugs entry " << entry->id();
 459         return NULL;
 460       }
 461     }
 462     dictionary_entry_count++;
 463   }
 464
 465   const base::ListValue* webkit_bugs;
 466   if (value->GetList("webkit_bugs", &webkit_bugs)) {
 467     for (size_t i = 0; i < webkit_bugs->GetSize(); ++i) {
 468       int bug_id;
 469       if (webkit_bugs->GetInteger(i, &bug_id)) {
 470         entry->webkit_bugs_.push_back(bug_id);
 471       } else {
 472         LOG(WARNING) << "Malformed webkit_bugs entry " << entry->id();
 473         return NULL;
 474       }
 475     }
 476     dictionary_entry_count++;
 477   }
 478
 479   const base::DictionaryValue* os_value = NULL;
 480   if (value->GetDictionary("os", &os_value)) {
 481     std::string os_type;
 482     std::string os_version_op = "any";
 483     std::string os_version_string;
 484     std::string os_version_string2;
 485     os_value->GetString("type", &os_type);
 486     const base::DictionaryValue* os_version_value = NULL;
 487     if (os_value->GetDictionary("version", &os_version_value)) {
 488       os_version_value->GetString(kOp, &os_version_op);
 489       os_version_value->GetString("number", &os_version_string);
 490       os_version_value->GetString("number2", &os_version_string2);
 491     }
 492     if (!entry->SetOsInfo(os_type, os_version_op, os_version_string,
 493                           os_version_string2)) {
 494       LOG(WARNING) << "Malformed os entry " << entry->id();
 495       return NULL;
 496     }
 497     dictionary_entry_count++;
 498   }
 499
 500   std::string vendor_id;
 501   if (value->GetString("vendor_id", &vendor_id)) {
 502     if (!entry->SetVendorId(vendor_id)) {
 503       LOG(WARNING) << "Malformed vendor_id entry " << entry->id();
 504       return NULL;
 505     }
 506     dictionary_entry_count++;
 507   }
 508
 509   const base::ListValue* device_id_list;
 510   if (value->GetList("device_id", &device_id_list)) {
 511     for (size_t i = 0; i < device_id_list->GetSize(); ++i) {
 512         std::string device_id;
 513       if (!device_id_list->GetString(i, &device_id) ||
 514           !entry->AddDeviceId(device_id)) {
 515         LOG(WARNING) << "Malformed device_id entry " << entry->id();
 516         return NULL;
 517       }
 518     }
 519     dictionary_entry_count++;
 520   }
 521
 522   std::string multi_gpu_style;
 523   if (value->GetString("multi_gpu_style", &multi_gpu_style)) {
 524     if (!entry->SetMultiGpuStyle(multi_gpu_style)) {
 525       LOG(WARNING) << "Malformed multi_gpu_style entry " << entry->id();
 526       return NULL;
 527     }
 528     dictionary_entry_count++;
 529   }
 530
 531   std::string multi_gpu_category;
 532   if (value->GetString("multi_gpu_category", &multi_gpu_category)) {
 533     if (!entry->SetMultiGpuCategory(multi_gpu_category)) {
 534       LOG(WARNING) << "Malformed multi_gpu_category entry " << entry->id();
 535       return NULL;
 536     }
 537     dictionary_entry_count++;
 538   }
 539
 540   const base::DictionaryValue* driver_vendor_value = NULL;
 541   if (value->GetDictionary("driver_vendor", &driver_vendor_value)) {
 542     std::string vendor_op;
 543     std::string vendor_value;
 544     driver_vendor_value->GetString(kOp, &vendor_op);
 545     driver_vendor_value->GetString("value", &vendor_value);
 546     if (!entry->SetDriverVendorInfo(vendor_op, vendor_value)) {
 547       LOG(WARNING) << "Malformed driver_vendor entry " << entry->id();
 548       return NULL;
 549     }
 550     dictionary_entry_count++;
 551   }
 552
 553   const base::DictionaryValue* driver_version_value = NULL;
 554   if (value->GetDictionary("driver_version", &driver_version_value)) {
 555     std::string driver_version_op = "any";
 556     std::string driver_version_style;
 557     std::string driver_version_string;
 558     std::string driver_version_string2;
 559     driver_version_value->GetString(kOp, &driver_version_op);
 560     driver_version_value->GetString("style", &driver_version_style);
 561     driver_version_value->GetString("number", &driver_version_string);
 562     driver_version_value->GetString("number2", &driver_version_string2);
 563     if (!entry->SetDriverVersionInfo(driver_version_op,
 564                                      driver_version_style,
 565                                      driver_version_string,
 566                                      driver_version_string2)) {
 567       LOG(WARNING) << "Malformed driver_version entry " << entry->id();
 568       return NULL;
 569     }
 570     dictionary_entry_count++;
 571   }
 572
 573   const base::DictionaryValue* driver_date_value = NULL;
 574   if (value->GetDictionary("driver_date", &driver_date_value)) {
 575     std::string driver_date_op = "any";
 576     std::string driver_date_string;
 577     std::string driver_date_string2;
 578     driver_date_value->GetString(kOp, &driver_date_op);
 579     driver_date_value->GetString("number", &driver_date_string);
 580     driver_date_value->GetString("number2", &driver_date_string2);
 581     if (!entry->SetDriverDateInfo(driver_date_op, driver_date_string,
 582                                   driver_date_string2)) {
 583       LOG(WARNING) << "Malformed driver_date entry " << entry->id();
 584       return NULL;
 585     }
 586     dictionary_entry_count++;
 587   }
 588
 589   const base::DictionaryValue* gl_vendor_value = NULL;
 590   if (value->GetDictionary("gl_vendor", &gl_vendor_value)) {
 591     std::string vendor_op;
 592     std::string vendor_value;
 593     gl_vendor_value->GetString(kOp, &vendor_op);
 594     gl_vendor_value->GetString("value", &vendor_value);
 595     if (!entry->SetGLVendorInfo(vendor_op, vendor_value)) {
 596       LOG(WARNING) << "Malformed gl_vendor entry " << entry->id();
 597       return NULL;
 598     }
 599     dictionary_entry_count++;
 600   }
 601
 602   const base::DictionaryValue* gl_renderer_value = NULL;
 603   if (value->GetDictionary("gl_renderer", &gl_renderer_value)) {
 604     std::string renderer_op;
 605     std::string renderer_value;
 606     gl_renderer_value->GetString(kOp, &renderer_op);
 607     gl_renderer_value->GetString("value", &renderer_value);
 608     if (!entry->SetGLRendererInfo(renderer_op, renderer_value)) {
 609       LOG(WARNING) << "Malformed gl_renderer entry " << entry->id();
 610       return NULL;
 611     }
 612     dictionary_entry_count++;
 613   }
 614
 615   const base::DictionaryValue* gl_extensions_value = NULL;
 616   if (value->GetDictionary("gl_extensions", &gl_extensions_value)) {
 617     std::string extensions_op;
 618     std::string extensions_value;
 619     gl_extensions_value->GetString(kOp, &extensions_op);
 620     gl_extensions_value->GetString("value", &extensions_value);
 621     if (!entry->SetGLExtensionsInfo(extensions_op, extensions_value)) {
 622       LOG(WARNING) << "Malformed gl_extensions entry " << entry->id();
 623       return NULL;
 624     }
 625     dictionary_entry_count++;
 626   }
 627
 628   const base::DictionaryValue* cpu_brand_value = NULL;
 629   if (value->GetDictionary("cpu_info", &cpu_brand_value)) {
 630     std::string cpu_op;
 631     std::string cpu_value;
 632     cpu_brand_value->GetString(kOp, &cpu_op);
 633     cpu_brand_value->GetString("value", &cpu_value);
 634     if (!entry->SetCpuBrand(cpu_op, cpu_value)) {
 635       LOG(WARNING) << "Malformed cpu_brand entry " << entry->id();
 636       return NULL;
 637     }
 638     dictionary_entry_count++;
 639   }
 640
 641   const base::DictionaryValue* perf_graphics_value = NULL;
 642   if (value->GetDictionary("perf_graphics", &perf_graphics_value)) {
 643     std::string op;
 644     std::string float_value;
 645     std::string float_value2;
 646     perf_graphics_value->GetString(kOp, &op);
 647     perf_graphics_value->GetString("value", &float_value);
 648     perf_graphics_value->GetString("value2", &float_value2);
 649     if (!entry->SetPerfGraphicsInfo(op, float_value, float_value2)) {
 650       LOG(WARNING) << "Malformed perf_graphics entry " << entry->id();
 651       return NULL;
 652     }
 653     dictionary_entry_count++;
 654   }
 655
 656   const base::DictionaryValue* perf_gaming_value = NULL;
 657   if (value->GetDictionary("perf_gaming", &perf_gaming_value)) {
 658     std::string op;
 659     std::string float_value;
 660     std::string float_value2;
 661     perf_gaming_value->GetString(kOp, &op);
 662     perf_gaming_value->GetString("value", &float_value);
 663     perf_gaming_value->GetString("value2", &float_value2);
 664     if (!entry->SetPerfGamingInfo(op, float_value, float_value2)) {
 665       LOG(WARNING) << "Malformed perf_gaming entry " << entry->id();
 666       return NULL;
 667     }
 668     dictionary_entry_count++;
 669   }
 670
 671   const base::DictionaryValue* perf_overall_value = NULL;
 672   if (value->GetDictionary("perf_overall", &perf_overall_value)) {
 673     std::string op;
 674     std::string float_value;
 675     std::string float_value2;
 676     perf_overall_value->GetString(kOp, &op);
 677     perf_overall_value->GetString("value", &float_value);
 678     perf_overall_value->GetString("value2", &float_value2);
 679     if (!entry->SetPerfOverallInfo(op, float_value, float_value2)) {
 680       LOG(WARNING) << "Malformed perf_overall entry " << entry->id();
 681       return NULL;
 682     }
 683     dictionary_entry_count++;
 684   }
 685
 686   const base::DictionaryValue* machine_model_value = NULL;
 687   if (value->GetDictionary("machine_model", &machine_model_value)) {
 688     std::string name_op;
 689     std::string name_value;
 690     const base::DictionaryValue* name = NULL;
 691     if (machine_model_value->GetDictionary("name", &name)) {
 692       name->GetString(kOp, &name_op);
 693       name->GetString("value", &name_value);
 694     }
 695
 696     std::string version_op = "any";
 697     std::string version_string;
 698     std::string version_string2;
 699     const base::DictionaryValue* version_value = NULL;
 700     if (machine_model_value->GetDictionary("version", &version_value)) {
 701       version_value->GetString(kOp, &version_op);
 702       version_value->GetString("number", &version_string);
 703       version_value->GetString("number2", &version_string2);
 704     }
 705     if (!entry->SetMachineModelInfo(
 706             name_op, name_value, version_op, version_string, version_string2)) {
 707       LOG(WARNING) << "Malformed machine_model entry " << entry->id();
 708       return NULL;
 709     }
 710     dictionary_entry_count++;
 711   }
 712
 713   const base::DictionaryValue* gpu_count_value = NULL;
 714   if (value->GetDictionary("gpu_count", &gpu_count_value)) {
 715     std::string op;
 716     std::string int_value;
 717     std::string int_value2;
 718     gpu_count_value->GetString(kOp, &op);
 719     gpu_count_value->GetString("value", &int_value);
 720     gpu_count_value->GetString("value2", &int_value2);
 721     if (!entry->SetGpuCountInfo(op, int_value, int_value2)) {
 722       LOG(WARNING) << "Malformed gpu_count entry " << entry->id();
 723       return NULL;
 724     }
 725     dictionary_entry_count++;
 726   }
 727
 728   if (top_level) {
 729     const base::ListValue* feature_value = NULL;
 730     if (value->GetList("features", &feature_value)) {
 731       std::vector<std::string> feature_list;
 732       for (size_t i = 0; i < feature_value->GetSize(); ++i) {
 733         std::string feature;
 734         if (feature_value->GetString(i, &feature)) {
 735           feature_list.push_back(feature);
 736         } else {
 737           LOG(WARNING) << "Malformed feature entry " << entry->id();
 738           return NULL;
 739         }
 740       }
 741       if (!entry->SetFeatures(
 742               feature_list, feature_map, supports_feature_type_all)) {
 743         LOG(WARNING) << "Malformed feature entry " << entry->id();
 744         return NULL;
 745       }
 746       dictionary_entry_count++;
 747     }
 748   }
 749
 750   if (top_level) {
 751     const base::ListValue* exception_list_value = NULL;
 752     if (value->GetList("exceptions", &exception_list_value)) {
 753       for (size_t i = 0; i < exception_list_value->GetSize(); ++i) {
 754         const base::DictionaryValue* exception_value = NULL;
 755         if (!exception_list_value->GetDictionary(i, &exception_value)) {
 756           LOG(WARNING) << "Malformed exceptions entry " << entry->id();
 757           return NULL;
 758         }
 759         ScopedGpuControlListEntry exception(GetEntryFromValue(
 760             exception_value, false, feature_map, supports_feature_type_all));
 761         if (exception.get() == NULL) {
 762           LOG(WARNING) << "Malformed exceptions entry " << entry->id();
 763           return NULL;
 764         }
 765         // Exception should inherit vendor_id from parent, otherwise if only
 766         // device_ids are specified in Exception, the info will be incomplete.
 767         if (exception->vendor_id_ == 0 && entry->vendor_id_ != 0)
 768           exception->vendor_id_ = entry->vendor_id_;
 769         if (exception->contains_unknown_fields_) {
 770           LOG(WARNING) << "Exception with unknown fields " << entry->id();
 771           entry->contains_unknown_fields_ = true;
 772         } else {
 773           entry->AddException(exception);
 774         }
 775       }
 776       dictionary_entry_count++;
 777     }
 778
 779     const base::DictionaryValue* browser_version_value = NULL;
 780     // browser_version is processed in LoadGpuControlList().
 781     if (value->GetDictionary("browser_version", &browser_version_value))
 782       dictionary_entry_count++;
 783   }
 784
 785   if (value->size() != dictionary_entry_count) {
 786     LOG(WARNING) << "Entry with unknown fields " << entry->id();
 787     entry->contains_unknown_fields_ = true;
 788   }
 789   return entry;
 790 }
 791
 792 GpuControlList::GpuControlListEntry::GpuControlListEntry()
 793     : id_(0),
 794       disabled_(false),
 795       vendor_id_(0),
 796       multi_gpu_style_(kMultiGpuStyleNone),
 797       multi_gpu_category_(kMultiGpuCategoryPrimary),
 798       contains_unknown_fields_(false),
 799       contains_unknown_features_(false) {
 800 }
 801
 802 GpuControlList::GpuControlListEntry::~GpuControlListEntry() { }
 803
 804 bool GpuControlList::GpuControlListEntry::SetId(uint32 id) {
 805   if (id != 0) {
 806     id_ = id;
 807     return true;
 808   }
 809   return false;
 810 }
 811
 812 void GpuControlList::GpuControlListEntry::SetDisabled(bool disabled) {
 813   disabled_ = disabled;
 814 }
 815
 816 bool GpuControlList::GpuControlListEntry::SetOsInfo(
 817     const std::string& os,
 818     const std::string& version_op,
 819     const std::string& version_string,
 820     const std::string& version_string2) {
 821   os_info_.reset(new OsInfo(os, version_op, version_string, version_string2));
 822   return os_info_->IsValid();
 823 }
 824
 825 bool GpuControlList::GpuControlListEntry::SetVendorId(
 826     const std::string& vendor_id_string) {
 827   vendor_id_ = 0;
 828   return base::HexStringToInt(vendor_id_string,
 829                               reinterpret_cast<int*>(&vendor_id_));
 830 }
 831
 832 bool GpuControlList::GpuControlListEntry::AddDeviceId(
 833     const std::string& device_id_string) {
 834   uint32 device_id = 0;
 835   if (base::HexStringToInt(device_id_string,
 836                            reinterpret_cast<int*>(&device_id))) {
 837     device_id_list_.push_back(device_id);
 838     return true;
 839   }
 840   return false;
 841 }
 842
 843 bool GpuControlList::GpuControlListEntry::SetMultiGpuStyle(
 844     const std::string& multi_gpu_style_string) {
 845   MultiGpuStyle style = StringToMultiGpuStyle(multi_gpu_style_string);
 846   if (style == kMultiGpuStyleNone)
 847     return false;
 848   multi_gpu_style_ = style;
 849   return true;
 850 }
 851
 852 bool GpuControlList::GpuControlListEntry::SetMultiGpuCategory(
 853     const std::string& multi_gpu_category_string) {
 854   MultiGpuCategory category =
 855       StringToMultiGpuCategory(multi_gpu_category_string);
 856   if (category == kMultiGpuCategoryNone)
 857     return false;
 858   multi_gpu_category_ = category;
 859   return true;
 860 }
 861
 862 bool GpuControlList::GpuControlListEntry::SetDriverVendorInfo(
 863     const std::string& vendor_op,
 864     const std::string& vendor_value) {
 865   driver_vendor_info_.reset(new StringInfo(vendor_op, vendor_value));
 866   return driver_vendor_info_->IsValid();
 867 }
 868
 869 bool GpuControlList::GpuControlListEntry::SetDriverVersionInfo(
 870     const std::string& version_op,
 871     const std::string& version_style,
 872     const std::string& version_string,
 873     const std::string& version_string2) {
 874   driver_version_info_.reset(new VersionInfo(
 875       version_op, version_style, version_string, version_string2));
 876   return driver_version_info_->IsValid();
 877 }
 878
 879 bool GpuControlList::GpuControlListEntry::SetDriverDateInfo(
 880     const std::string& date_op,
 881     const std::string& date_string,
 882     const std::string& date_string2) {
 883   driver_date_info_.reset(
 884       new VersionInfo(date_op, std::string(), date_string, date_string2));
 885   return driver_date_info_->IsValid();
 886 }
 887
 888 bool GpuControlList::GpuControlListEntry::SetGLVendorInfo(
 889     const std::string& vendor_op,
 890     const std::string& vendor_value) {
 891   gl_vendor_info_.reset(new StringInfo(vendor_op, vendor_value));
 892   return gl_vendor_info_->IsValid();
 893 }
 894
 895 bool GpuControlList::GpuControlListEntry::SetGLRendererInfo(
 896     const std::string& renderer_op,
 897     const std::string& renderer_value) {
 898   gl_renderer_info_.reset(new StringInfo(renderer_op, renderer_value));
 899   return gl_renderer_info_->IsValid();
 900 }
 901
 902 bool GpuControlList::GpuControlListEntry::SetGLExtensionsInfo(
 903     const std::string& extensions_op,
 904     const std::string& extensions_value) {
 905   gl_extensions_info_.reset(new StringInfo(extensions_op, extensions_value));
 906   return gl_extensions_info_->IsValid();
 907 }
 908
 909 bool GpuControlList::GpuControlListEntry::SetCpuBrand(
 910     const std::string& cpu_op,
 911     const std::string& cpu_value) {
 912   cpu_brand_.reset(new StringInfo(cpu_op, cpu_value));
 913   return cpu_brand_->IsValid();
 914 }
 915
 916 bool GpuControlList::GpuControlListEntry::SetPerfGraphicsInfo(
 917     const std::string& op,
 918     const std::string& float_string,
 919     const std::string& float_string2) {
 920   perf_graphics_info_.reset(new FloatInfo(op, float_string, float_string2));
 921   return perf_graphics_info_->IsValid();
 922 }
 923
 924 bool GpuControlList::GpuControlListEntry::SetPerfGamingInfo(
 925     const std::string& op,
 926     const std::string& float_string,
 927     const std::string& float_string2) {
 928   perf_gaming_info_.reset(new FloatInfo(op, float_string, float_string2));
 929   return perf_gaming_info_->IsValid();
 930 }
 931
 932 bool GpuControlList::GpuControlListEntry::SetPerfOverallInfo(
 933     const std::string& op,
 934     const std::string& float_string,
 935     const std::string& float_string2) {
 936   perf_overall_info_.reset(new FloatInfo(op, float_string, float_string2));
 937   return perf_overall_info_->IsValid();
 938 }
 939
 940 bool GpuControlList::GpuControlListEntry::SetMachineModelInfo(
 941     const std::string& name_op,
 942     const std::string& name_value,
 943     const std::string& version_op,
 944     const std::string& version_string,
 945     const std::string& version_string2) {
 946   machine_model_info_.reset(new MachineModelInfo(
 947       name_op, name_value, version_op, version_string, version_string2));
 948   return machine_model_info_->IsValid();
 949 }
 950
 951 bool GpuControlList::GpuControlListEntry::SetGpuCountInfo(
 952     const std::string& op,
 953     const std::string& int_string,
 954     const std::string& int_string2) {
 955   gpu_count_info_.reset(new IntInfo(op, int_string, int_string2));
 956   return gpu_count_info_->IsValid();
 957 }
 958
 959 bool GpuControlList::GpuControlListEntry::SetFeatures(
 960     const std::vector<std::string>& feature_strings,
 961     const FeatureMap& feature_map,
 962     bool supports_feature_type_all) {
 963   size_t size = feature_strings.size();
 964   if (size == 0)
 965     return false;
 966   features_.clear();
 967   for (size_t i = 0; i < size; ++i) {
 968     int feature = 0;
 969     if (supports_feature_type_all && feature_strings[i] == "all") {
 970       for (FeatureMap::const_iterator iter = feature_map.begin();
 971            iter != feature_map.end(); ++iter)
 972         features_.insert(iter->second);
 973       continue;
 974     }
 975     if (StringToFeature(feature_strings[i], &feature, feature_map))
 976       features_.insert(feature);
 977     else
 978       contains_unknown_features_ = true;
 979   }
 980   return true;
 981 }
 982
 983 void GpuControlList::GpuControlListEntry::AddException(
 984     ScopedGpuControlListEntry exception) {
 985   exceptions_.push_back(exception);
 986 }
 987
 988 // static
 989 GpuControlList::GpuControlListEntry::MultiGpuStyle
 990 GpuControlList::GpuControlListEntry::StringToMultiGpuStyle(
 991     const std::string& style) {
 992   if (style == kMultiGpuStyleStringOptimus)
 993     return kMultiGpuStyleOptimus;
 994   if (style == kMultiGpuStyleStringAMDSwitchable)
 995     return kMultiGpuStyleAMDSwitchable;
 996   return kMultiGpuStyleNone;
 997 }
 998
 999 // static
1000 GpuControlList::GpuControlListEntry::MultiGpuCategory
1001 GpuControlList::GpuControlListEntry::StringToMultiGpuCategory(
1002     const std::string& category) {
1003   if (category == kMultiGpuCategoryStringPrimary)
1004     return kMultiGpuCategoryPrimary;
1005   if (category == kMultiGpuCategoryStringSecondary)
1006     return kMultiGpuCategorySecondary;
1007   if (category == kMultiGpuCategoryStringAny)
1008     return kMultiGpuCategoryAny;
1009   return kMultiGpuCategoryNone;
1010 }
1011
1012 bool GpuControlList::GpuControlListEntry::Contains(
1013     OsType os_type, const std::string& os_version,
1014     const GPUInfo& gpu_info) const {
1015   DCHECK(os_type != kOsAny);
1016   if (os_info_.get() != NULL && !os_info_->Contains(os_type, os_version))
1017     return false;
1018   bool is_not_primary_gpu =
1019       GpuUnmatched(vendor_id_, device_id_list_, gpu_info.gpu);
1020   bool is_not_secondary_gpu = true;
1021   for (size_t i = 0; i < gpu_info.secondary_gpus.size(); ++i) {
1022     is_not_secondary_gpu = is_not_secondary_gpu &&
1023         GpuUnmatched(vendor_id_, device_id_list_, gpu_info.secondary_gpus[i]);
1024   }
1025   switch (multi_gpu_category_) {
1026     case kMultiGpuCategoryPrimary:
1027       if (is_not_primary_gpu)
1028         return false;
1029       break;
1030     case kMultiGpuCategorySecondary:
1031       if (is_not_secondary_gpu)
1032         return false;
1033       break;
1034     case kMultiGpuCategoryAny:
1035       if (is_not_primary_gpu && is_not_secondary_gpu)
1036         return false;
1037       break;
1038     case kMultiGpuCategoryNone:
1039       break;
1040   }
1041   switch (multi_gpu_style_) {
1042     case kMultiGpuStyleOptimus:
1043       if (!gpu_info.optimus)
1044         return false;
1045       break;
1046     case kMultiGpuStyleAMDSwitchable:
1047       if (!gpu_info.amd_switchable)
1048         return false;
1049       break;
1050     case kMultiGpuStyleNone:
1051       break;
1052   }
1053   if (driver_vendor_info_.get() != NULL && !gpu_info.driver_vendor.empty() &&
1054       !driver_vendor_info_->Contains(gpu_info.driver_vendor))
1055     return false;
1056   if (driver_version_info_.get() != NULL && !gpu_info.driver_version.empty()) {
1057     if (!driver_version_info_->Contains(gpu_info.driver_version))
1058       return false;
1059   }
1060   if (driver_date_info_.get() != NULL && !gpu_info.driver_date.empty()) {
1061     if (!driver_date_info_->Contains(gpu_info.driver_date, '-'))
1062       return false;
1063   }
1064   if (gl_vendor_info_.get() != NULL && !gpu_info.gl_vendor.empty() &&
1065       !gl_vendor_info_->Contains(gpu_info.gl_vendor))
1066     return false;
1067   if (gl_renderer_info_.get() != NULL && !gpu_info.gl_renderer.empty() &&
1068       !gl_renderer_info_->Contains(gpu_info.gl_renderer))
1069     return false;
1070   if (gl_extensions_info_.get() != NULL && !gpu_info.gl_extensions.empty() &&
1071       !gl_extensions_info_->Contains(gpu_info.gl_extensions))
1072     return false;
1073   if (perf_graphics_info_.get() != NULL &&
1074       (gpu_info.performance_stats.graphics == 0.0 ||
1075        !perf_graphics_info_->Contains(gpu_info.performance_stats.graphics)))
1076     return false;
1077   if (perf_gaming_info_.get() != NULL &&
1078       (gpu_info.performance_stats.gaming == 0.0 ||
1079        !perf_gaming_info_->Contains(gpu_info.performance_stats.gaming)))
1080     return false;
1081   if (perf_overall_info_.get() != NULL &&
1082       (gpu_info.performance_stats.overall == 0.0 ||
1083        !perf_overall_info_->Contains(gpu_info.performance_stats.overall)))
1084     return false;
1085   if (machine_model_info_.get() != NULL) {
1086     std::vector<std::string> name_version;
1087     base::SplitString(gpu_info.machine_model, ' ', &name_version);
1088     if (name_version.size() == 2 &&
1089         !machine_model_info_->Contains(name_version[0], name_version[1]))
1090       return false;
1091   }
1092   if (gpu_count_info_.get() != NULL &&
1093       !gpu_count_info_->Contains(gpu_info.secondary_gpus.size() + 1))
1094     return false;
1095   if (cpu_brand_.get() != NULL) {
1096     base::CPU cpu_info;
1097     if (!cpu_brand_->Contains(cpu_info.cpu_brand()))
1098       return false;
1099   }
1100
1101   for (size_t i = 0; i < exceptions_.size(); ++i) {
1102     if (exceptions_[i]->Contains(os_type, os_version, gpu_info) &&
1103         !exceptions_[i]->NeedsMoreInfo(gpu_info))
1104       return false;
1105   }
1106   return true;
1107 }
1108
1109 bool GpuControlList::GpuControlListEntry::NeedsMoreInfo(
1110     const GPUInfo& gpu_info) const {
1111   // We only check for missing info that might be collected with a gl context.
1112   // If certain info is missing due to some error, say, we fail to collect
1113   // vendor_id/device_id, then even if we launch GPU process and create a gl
1114   // context, we won't gather such missing info, so we still return false.
1115   if (driver_vendor_info_.get() && gpu_info.driver_vendor.empty())
1116     return true;
1117   if (driver_version_info_.get() && gpu_info.driver_version.empty())
1118     return true;
1119   if (gl_vendor_info_.get() && gpu_info.gl_vendor.empty())
1120     return true;
1121   if (gl_renderer_info_.get() && gpu_info.gl_renderer.empty())
1122     return true;
1123   for (size_t i = 0; i < exceptions_.size(); ++i) {
1124     if (exceptions_[i]->NeedsMoreInfo(gpu_info))
1125       return true;
1126   }
1127   return false;
1128 }
1129
1130 GpuControlList::OsType GpuControlList::GpuControlListEntry::GetOsType() const {
1131   if (os_info_.get() == NULL)
1132     return kOsAny;
1133   return os_info_->type();
1134 }
1135
1136 uint32 GpuControlList::GpuControlListEntry::id() const {
1137   return id_;
1138 }
1139
1140 bool GpuControlList::GpuControlListEntry::disabled() const {
1141   return disabled_;
1142 }
1143
1144 const std::set<int>& GpuControlList::GpuControlListEntry::features() const {
1145   return features_;
1146 }
1147
1148 // static
1149 bool GpuControlList::GpuControlListEntry::StringToFeature(
1150     const std::string& feature_name, int* feature_id,
1151     const FeatureMap& feature_map) {
1152   FeatureMap::const_iterator iter = feature_map.find(feature_name);
1153   if (iter != feature_map.end()) {
1154     *feature_id = iter->second;
1155     return true;
1156   }
1157   return false;
1158 }
1159
1160 GpuControlList::GpuControlList()
1161     : max_entry_id_(0),
1162       contains_unknown_fields_(false),
1163       needs_more_info_(false),
1164       supports_feature_type_all_(false) {
1165 }
1166
1167 GpuControlList::~GpuControlList() {
1168   Clear();
1169 }
1170
1171 bool GpuControlList::LoadList(
1172     const std::string& json_context, GpuControlList::OsFilter os_filter) {
1173   const std::string browser_version_string = "0";
1174   return LoadList(browser_version_string, json_context, os_filter);
1175 }
1176
1177 bool GpuControlList::LoadList(
1178     const std::string& browser_version_string,
1179     const std::string& json_context,
1180     GpuControlList::OsFilter os_filter) {
1181   std::vector<std::string> pieces;
1182   if (!ProcessVersionString(browser_version_string, '.', &pieces))
1183     return false;
1184   browser_version_ = browser_version_string;
1185
1186   scoped_ptr<base::Value> root;
1187   root.reset(base::JSONReader::Read(json_context));
1188   if (root.get() == NULL || !root->IsType(base::Value::TYPE_DICTIONARY))
1189     return false;
1190
1191   base::DictionaryValue* root_dictionary =
1192       static_cast<base::DictionaryValue*>(root.get());
1193   DCHECK(root_dictionary);
1194   return LoadList(*root_dictionary, os_filter);
1195 }
1196
1197 bool GpuControlList::LoadList(const base::DictionaryValue& parsed_json,
1198                               GpuControlList::OsFilter os_filter) {
1199   std::vector<ScopedGpuControlListEntry> entries;
1200
1201   parsed_json.GetString("version", &version_);
1202   std::vector<std::string> pieces;
1203   if (!ProcessVersionString(version_, '.', &pieces))
1204     return false;
1205
1206   const base::ListValue* list = NULL;
1207   if (!parsed_json.GetList("entries", &list))
1208     return false;
1209
1210   uint32 max_entry_id = 0;
1211   bool contains_unknown_fields = false;
1212   for (size_t i = 0; i < list->GetSize(); ++i) {
1213     const base::DictionaryValue* list_item = NULL;
1214     bool valid = list->GetDictionary(i, &list_item);
1215     if (!valid || list_item == NULL)
1216       return false;
1217     // Check browser version compatibility: if the entry is not for the
1218     // current browser version, don't process it.
1219     BrowserVersionSupport browser_version_support =
1220         IsEntrySupportedByCurrentBrowserVersion(list_item);
1221     if (browser_version_support == kMalformed)
1222       return false;
1223     if (browser_version_support == kUnsupported)
1224       continue;
1225     DCHECK(browser_version_support == kSupported);
1226     ScopedGpuControlListEntry entry(GpuControlListEntry::GetEntryFromValue(
1227         list_item, true, feature_map_, supports_feature_type_all_));
1228     if (entry.get() == NULL)
1229       return false;
1230     if (entry->id() > max_entry_id)
1231       max_entry_id = entry->id();
1232     // If an unknown field is encountered, skip the entry; if an unknown
1233     // feature is encountered, ignore the feature, but keep the entry.
1234     if (entry->contains_unknown_fields()) {
1235       contains_unknown_fields = true;
1236       continue;
1237     }
1238     if (entry->contains_unknown_features())
1239       contains_unknown_fields = true;
1240     entries.push_back(entry);
1241   }
1242
1243   Clear();
1244   OsType my_os = GetOsType();
1245   for (size_t i = 0; i < entries.size(); ++i) {
1246     OsType entry_os = entries[i]->GetOsType();
1247     if (os_filter == GpuControlList::kAllOs ||
1248         entry_os == kOsAny || entry_os == my_os)
1249       entries_.push_back(entries[i]);
1250   }
1251   max_entry_id_ = max_entry_id;
1252   contains_unknown_fields_ = contains_unknown_fields;
1253   return true;
1254 }
1255
1256 std::set<int> GpuControlList::MakeDecision(
1257     GpuControlList::OsType os,
1258     std::string os_version,
1259     const GPUInfo& gpu_info) {
1260   active_entries_.clear();
1261   std::set<int> features;
1262
1263   needs_more_info_ = false;
1264   std::set<int> possible_features;
1265
1266   if (os == kOsAny)
1267     os = GetOsType();
1268   if (os_version.empty()) {
1269     os_version = base::SysInfo::OperatingSystemVersion();
1270     size_t pos = os_version.find_first_not_of("0123456789.");
1271     if (pos != std::string::npos)
1272       os_version = os_version.substr(0, pos);
1273   }
1274   std::vector<std::string> pieces;
1275   if (!ProcessVersionString(os_version, '.', &pieces))
1276     os_version = "0";
1277
1278   for (size_t i = 0; i < entries_.size(); ++i) {
1279     if (entries_[i]->Contains(os, os_version, gpu_info)) {
1280       if (!entries_[i]->disabled()) {
1281         MergeFeatureSets(&possible_features, entries_[i]->features());
1282         if (!entries_[i]->NeedsMoreInfo(gpu_info))
1283           MergeFeatureSets(&features, entries_[i]->features());
1284       }
1285       active_entries_.push_back(entries_[i]);
1286     }
1287   }
1288
1289   if (possible_features.size() > features.size())
1290     needs_more_info_ = true;
1291
1292   return features;
1293 }
1294
1295 void GpuControlList::GetDecisionEntries(
1296     std::vector<uint32>* entry_ids, bool disabled) const {
1297   DCHECK(entry_ids);
1298   entry_ids->clear();
1299   for (size_t i = 0; i < active_entries_.size(); ++i) {
1300     if (disabled == active_entries_[i]->disabled())
1301       entry_ids->push_back(active_entries_[i]->id());
1302   }
1303 }
1304
1305 void GpuControlList::GetReasons(base::ListValue* problem_list) const {
1306   DCHECK(problem_list);
1307   for (size_t i = 0; i < active_entries_.size(); ++i) {
1308     GpuControlListEntry* entry = active_entries_[i].get();
1309     if (entry->disabled())
1310       continue;
1311     base::DictionaryValue* problem = new base::DictionaryValue();
1312
1313     problem->SetString("description", entry->description());
1314
1315     base::ListValue* cr_bugs = new base::ListValue();
1316     for (size_t j = 0; j < entry->cr_bugs().size(); ++j)
1317       cr_bugs->Append(new base::FundamentalValue(entry->cr_bugs()[j]));
1318     problem->Set("crBugs", cr_bugs);
1319
1320     base::ListValue* webkit_bugs = new base::ListValue();
1321     for (size_t j = 0; j < entry->webkit_bugs().size(); ++j) {
1322       webkit_bugs->Append(new base::FundamentalValue(entry->webkit_bugs()[j]));
1323     }
1324     problem->Set("webkitBugs", webkit_bugs);
1325
1326     problem_list->Append(problem);
1327   }
1328 }
1329
1330 size_t GpuControlList::num_entries() const {
1331   return entries_.size();
1332 }
1333
1334 uint32 GpuControlList::max_entry_id() const {
1335   return max_entry_id_;
1336 }
1337
1338 std::string GpuControlList::version() const {
1339   return version_;
1340 }
1341
1342 GpuControlList::OsType GpuControlList::GetOsType() {
1343 #if defined(OS_CHROMEOS)
1344   return kOsChromeOS;
1345 #elif defined(OS_WIN)
1346   return kOsWin;
1347 #elif defined(OS_ANDROID)
1348   return kOsAndroid;
1349 #elif defined(OS_LINUX) || defined(OS_OPENBSD)
1350   return kOsLinux;
1351 #elif defined(OS_MACOSX)
1352   return kOsMacosx;
1353 #else
1354   return kOsUnknown;
1355 #endif
1356 }
1357
1358 void GpuControlList::Clear() {
1359   entries_.clear();
1360   active_entries_.clear();
1361   max_entry_id_ = 0;
1362   contains_unknown_fields_ = false;
1363 }
1364
1365 GpuControlList::BrowserVersionSupport
1366 GpuControlList::IsEntrySupportedByCurrentBrowserVersion(
1367     const base::DictionaryValue* value) {
1368   DCHECK(value);
1369   const base::DictionaryValue* browser_version_value = NULL;
1370   if (value->GetDictionary("browser_version", &browser_version_value)) {
1371     std::string version_op = "any";
1372     std::string version_string;
1373     std::string version_string2;
1374     browser_version_value->GetString(kOp, &version_op);
1375     browser_version_value->GetString("number", &version_string);
1376     browser_version_value->GetString("number2", &version_string2);
1377     scoped_ptr<VersionInfo> browser_version_info;
1378     browser_version_info.reset(new VersionInfo(
1379         version_op, std::string(), version_string, version_string2));
1380     if (!browser_version_info->IsValid())
1381       return kMalformed;
1382     if (browser_version_info->Contains(browser_version_))
1383       return kSupported;
1384     return kUnsupported;
1385   }
1386   return kSupported;
1387 }
1388
1389 // static
1390 GpuControlList::NumericOp GpuControlList::StringToNumericOp(
1391     const std::string& op) {
1392   if (op == "=")
1393     return kEQ;
1394   if (op == "<")
1395     return kLT;
1396   if (op == "<=")
1397     return kLE;
1398   if (op == ">")
1399     return kGT;
1400   if (op == ">=")
1401     return kGE;
1402   if (op == "any")
1403     return kAny;
1404   if (op == "between")
1405     return kBetween;
1406   return kUnknown;
1407 }
1408
1409 void GpuControlList::AddSupportedFeature(
1410     const std::string& feature_name, int feature_id) {
1411   feature_map_[feature_name] = feature_id;
1412 }
1413
1414 void GpuControlList::set_supports_feature_type_all(bool supported) {
1415   supports_feature_type_all_ = supported;
1416 }
1417
1418 }  // namespace gpu
1419