chrome/browser/extensions/extension_icon_image_unittest.cc

   1 // Copyright (c) 2012 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 "chrome/browser/extensions/extension_icon_image.h"
   6
   7 #include "base/json/json_file_value_serializer.h"
   8 #include "base/message_loop.h"
   9 #include "base/path_service.h"
  10 #include "chrome/browser/extensions/image_loader.h"
  11 #include "chrome/common/chrome_paths.h"
  12 #include "chrome/common/extensions/extension.h"
  13 #include "chrome/common/extensions/extension_constants.h"
  14 #include "chrome/common/extensions/manifest.h"
  15 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
  16 #include "chrome/test/base/testing_profile.h"
  17 #include "content/public/test/test_browser_thread.h"
  18 #include "grit/theme_resources.h"
  19 #include "skia/ext/image_operations.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21 #include "ui/base/resource/resource_bundle.h"
  22 #include "ui/gfx/image/image_skia_source.h"
  23 #include "ui/gfx/skia_util.h"
  24
  25 using content::BrowserThread;
  26 using extensions::Extension;
  27 using extensions::IconImage;
  28 using extensions::Manifest;
  29
  30 namespace {
  31
  32 SkBitmap CreateBlankBitmapForScale(int size_dip, ui::ScaleFactor scale_factor) {
  33   SkBitmap bitmap;
  34   const float scale = ui::GetScaleFactorScale(scale_factor);
  35   bitmap.setConfig(SkBitmap::kARGB_8888_Config,
  36                    static_cast<int>(size_dip * scale),
  37                    static_cast<int>(size_dip * scale));
  38   bitmap.allocPixels();
  39   bitmap.eraseColor(SkColorSetARGB(0, 0, 0, 0));
  40   return bitmap;
  41 }
  42
  43 SkBitmap EnsureBitmapSize(const SkBitmap& original, int size) {
  44   if (original.width() == size && original.height() == size)
  45     return original;
  46
  47   SkBitmap resized = skia::ImageOperations::Resize(
  48       original, skia::ImageOperations::RESIZE_LANCZOS3, size, size);
  49   return resized;
  50 }
  51
  52 // Used to test behavior including images defined by an image skia source.
  53 // |GetImageForScale| simply returns image representation from the image given
  54 // in the ctor.
  55 class MockImageSkiaSource : public gfx::ImageSkiaSource {
  56  public:
  57   explicit MockImageSkiaSource(const gfx::ImageSkia& image)
  58       : image_(image) {
  59   }
  60   virtual ~MockImageSkiaSource() {}
  61
  62   virtual gfx::ImageSkiaRep GetImageForScale(
  63       ui::ScaleFactor scale_factor) OVERRIDE {
  64     return image_.GetRepresentation(scale_factor);
  65   }
  66
  67  private:
  68   gfx::ImageSkia image_;
  69 };
  70
  71 // Helper class for synchronously loading extension image resource.
  72 class TestImageLoader {
  73  public:
  74   explicit TestImageLoader(const Extension* extension)
  75       : extension_(extension),
  76         waiting_(false),
  77         image_loaded_(false) {
  78   }
  79   virtual ~TestImageLoader() {}
  80
  81   void OnImageLoaded(const gfx::Image& image) {
  82     image_ = image;
  83     image_loaded_ = true;
  84     if (waiting_)
  85       base::MessageLoop::current()->Quit();
  86   }
  87
  88   SkBitmap LoadBitmap(const std::string& path,
  89                       int size) {
  90     image_loaded_ = false;
  91
  92     image_loader_.LoadImageAsync(
  93         extension_, extension_->GetResource(path), gfx::Size(size, size),
  94         base::Bind(&TestImageLoader::OnImageLoaded,
  95                    base::Unretained(this)));
  96
  97     // If |image_| still hasn't been loaded (i.e. it is being loaded
  98     // asynchronously), wait for it.
  99     if (!image_loaded_) {
 100       waiting_ = true;
 101       base::MessageLoop::current()->Run();
 102       waiting_ = false;
 103     }
 104
 105     EXPECT_TRUE(image_loaded_);
 106
 107     return image_.IsEmpty() ? SkBitmap() : *image_.ToSkBitmap();
 108   }
 109
 110  private:
 111   const Extension* extension_;
 112   bool waiting_;
 113   bool image_loaded_;
 114   gfx::Image image_;
 115   extensions::ImageLoader image_loader_;
 116
 117   DISALLOW_COPY_AND_ASSIGN(TestImageLoader);
 118 };
 119
 120 class ExtensionIconImageTest : public testing::Test,
 121                                public IconImage::Observer {
 122  public:
 123   ExtensionIconImageTest()
 124       : image_loaded_count_(0),
 125         quit_in_image_loaded_(false),
 126         ui_thread_(BrowserThread::UI, &ui_loop_),
 127         file_thread_(BrowserThread::FILE),
 128         io_thread_(BrowserThread::IO) {
 129   }
 130
 131   virtual ~ExtensionIconImageTest() {}
 132
 133   void WaitForImageLoad() {
 134     quit_in_image_loaded_ = true;
 135     base::MessageLoop::current()->Run();
 136     quit_in_image_loaded_ = false;
 137   }
 138
 139   int ImageLoadedCount() {
 140     int result = image_loaded_count_;
 141     image_loaded_count_ = 0;
 142     return result;
 143   }
 144
 145   scoped_refptr<Extension> CreateExtension(const char* name,
 146                                            Manifest::Location location) {
 147     // Create and load an extension.
 148     base::FilePath test_file;
 149     if (!PathService::Get(chrome::DIR_TEST_DATA, &test_file)) {
 150       EXPECT_FALSE(true);
 151       return NULL;
 152     }
 153     test_file = test_file.AppendASCII("extensions").AppendASCII(name);
 154     int error_code = 0;
 155     std::string error;
 156     JSONFileValueSerializer serializer(test_file.AppendASCII("app.json"));
 157     scoped_ptr<DictionaryValue> valid_value(
 158         static_cast<DictionaryValue*>(serializer.Deserialize(&error_code,
 159                                                              &error)));
 160     EXPECT_EQ(0, error_code) << error;
 161     if (error_code != 0)
 162       return NULL;
 163
 164     EXPECT_TRUE(valid_value.get());
 165     if (!valid_value)
 166       return NULL;
 167
 168     return Extension::Create(test_file, location, *valid_value,
 169                              Extension::NO_FLAGS, &error);
 170   }
 171
 172   // testing::Test overrides:
 173   virtual void SetUp() OVERRIDE {
 174     file_thread_.Start();
 175     io_thread_.Start();
 176   }
 177
 178   // IconImage::Delegate overrides:
 179   virtual void OnExtensionIconImageChanged(IconImage* image) OVERRIDE {
 180     image_loaded_count_++;
 181     if (quit_in_image_loaded_)
 182       base::MessageLoop::current()->Quit();
 183   }
 184
 185   gfx::ImageSkia GetDefaultIcon() {
 186     return *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
 187         IDR_EXTENSIONS_FAVICON);
 188   }
 189
 190   // Loads an image to be used in test from the extension.
 191   // The image will be loaded from the relative path |path|.
 192   SkBitmap GetTestBitmap(const Extension* extension,
 193                          const std::string& path,
 194                          int size) {
 195     TestImageLoader image_loader(extension);
 196     return image_loader.LoadBitmap(path, size);
 197   }
 198
 199  private:
 200   int image_loaded_count_;
 201   bool quit_in_image_loaded_;
 202   base::MessageLoop ui_loop_;
 203   content::TestBrowserThread ui_thread_;
 204   content::TestBrowserThread file_thread_;
 205   content::TestBrowserThread io_thread_;
 206
 207   DISALLOW_COPY_AND_ASSIGN(ExtensionIconImageTest);
 208 };
 209
 210 }  // namespace
 211
 212 TEST_F(ExtensionIconImageTest, Basic) {
 213   scoped_ptr<Profile> profile(new TestingProfile());
 214   scoped_refptr<Extension> extension(CreateExtension(
 215       "extension_icon_image", Manifest::INVALID_LOCATION));
 216   ASSERT_TRUE(extension.get() != NULL);
 217
 218   gfx::ImageSkia default_icon = GetDefaultIcon();
 219
 220   // Load images we expect to find as representations in icon_image, so we
 221   // can later use them to validate icon_image.
 222   SkBitmap bitmap_16 = GetTestBitmap(extension.get(), "16.png", 16);
 223   ASSERT_FALSE(bitmap_16.empty());
 224
 225   // There is no image of size 32 defined in the extension manifest, so we
 226   // should expect manifest image of size 48 resized to size 32.
 227   SkBitmap bitmap_48_resized_to_32 =
 228       GetTestBitmap(extension.get(), "48.png", 32);
 229   ASSERT_FALSE(bitmap_48_resized_to_32.empty());
 230
 231   IconImage image(profile.get(),
 232                   extension.get(),
 233                   extensions::IconsInfo::GetIcons(extension.get()),
 234                   16,
 235                   default_icon,
 236                   this);
 237
 238   // No representations in |image_| yet.
 239   gfx::ImageSkia::ImageSkiaReps image_reps = image.image_skia().image_reps();
 240   ASSERT_EQ(0u, image_reps.size());
 241
 242   // Gets representation for a scale factor.
 243   gfx::ImageSkiaRep representation =
 244       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 245
 246   // Before the image representation is loaded, image should contain blank
 247   // image representation.
 248   EXPECT_TRUE(gfx::BitmapsAreEqual(
 249       representation.sk_bitmap(),
 250       CreateBlankBitmapForScale(16, ui::SCALE_FACTOR_100P)));
 251
 252   WaitForImageLoad();
 253   EXPECT_EQ(1, ImageLoadedCount());
 254   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 255
 256   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 257
 258   // We should get the right representation now.
 259   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(), bitmap_16));
 260   EXPECT_EQ(16, representation.pixel_width());
 261
 262   // Gets representation for an additional scale factor.
 263   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_200P);
 264
 265   EXPECT_TRUE(gfx::BitmapsAreEqual(
 266       representation.sk_bitmap(),
 267       CreateBlankBitmapForScale(16, ui::SCALE_FACTOR_200P)));
 268
 269   WaitForImageLoad();
 270   EXPECT_EQ(1, ImageLoadedCount());
 271   ASSERT_EQ(2u, image.image_skia().image_reps().size());
 272
 273   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_200P);
 274
 275   // Image should have been resized.
 276   EXPECT_EQ(32, representation.pixel_width());
 277   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(),
 278                                    bitmap_48_resized_to_32));
 279 }
 280
 281 // There is no resource with either exact or bigger size, but there is a smaller
 282 // resource.
 283 TEST_F(ExtensionIconImageTest, FallbackToSmallerWhenNoBigger) {
 284   scoped_ptr<Profile> profile(new TestingProfile());
 285   scoped_refptr<Extension> extension(CreateExtension(
 286       "extension_icon_image", Manifest::INVALID_LOCATION));
 287   ASSERT_TRUE(extension.get() != NULL);
 288
 289   gfx::ImageSkia default_icon = GetDefaultIcon();
 290
 291   // Load images we expect to find as representations in icon_image, so we
 292   // can later use them to validate icon_image.
 293   SkBitmap bitmap_48 = GetTestBitmap(extension.get(), "48.png", 48);
 294   ASSERT_FALSE(bitmap_48.empty());
 295
 296   IconImage image(profile.get(),
 297                   extension.get(),
 298                   extensions::IconsInfo::GetIcons(extension.get()),
 299                   32,
 300                   default_icon,
 301                   this);
 302
 303   gfx::ImageSkiaRep representation =
 304       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_200P);
 305
 306   WaitForImageLoad();
 307   EXPECT_EQ(1, ImageLoadedCount());
 308   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 309
 310   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_200P);
 311
 312   // We should have loaded the biggest smaller resource resized to the actual
 313   // size.
 314   EXPECT_EQ(ui::SCALE_FACTOR_200P, representation.scale_factor());
 315   EXPECT_EQ(64, representation.pixel_width());
 316   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(),
 317                                    EnsureBitmapSize(bitmap_48, 64)));
 318 }
 319
 320 // There is no resource with exact size, but there is a smaller and a bigger
 321 // one. Requested size is smaller than 32 though, so the smaller resource should
 322 // be loaded.
 323 TEST_F(ExtensionIconImageTest, FallbackToSmaller) {
 324   scoped_ptr<Profile> profile(new TestingProfile());
 325   scoped_refptr<Extension> extension(CreateExtension(
 326       "extension_icon_image", Manifest::INVALID_LOCATION));
 327   ASSERT_TRUE(extension.get() != NULL);
 328
 329   gfx::ImageSkia default_icon = GetDefaultIcon();
 330
 331   // Load images we expect to find as representations in icon_image, so we
 332   // can later use them to validate icon_image.
 333   SkBitmap bitmap_16 = GetTestBitmap(extension.get(), "16.png", 16);
 334   ASSERT_FALSE(bitmap_16.empty());
 335
 336   IconImage image(profile.get(),
 337                   extension.get(),
 338                   extensions::IconsInfo::GetIcons(extension.get()),
 339                   17,
 340                   default_icon,
 341                   this);
 342
 343   gfx::ImageSkiaRep representation =
 344       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 345
 346   WaitForImageLoad();
 347   EXPECT_EQ(1, ImageLoadedCount());
 348   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 349
 350   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 351
 352   // We should have loaded smaller (resized) resource.
 353   EXPECT_EQ(ui::SCALE_FACTOR_100P, representation.scale_factor());
 354   EXPECT_EQ(17, representation.pixel_width());
 355   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(),
 356                                    EnsureBitmapSize(bitmap_16, 17)));
 357 }
 358
 359 // If resource set is empty, |GetRepresentation| should synchronously return
 360 // default icon, without notifying observer of image change.
 361 TEST_F(ExtensionIconImageTest, NoResources) {
 362   scoped_ptr<Profile> profile(new TestingProfile());
 363   scoped_refptr<Extension> extension(CreateExtension(
 364       "extension_icon_image", Manifest::INVALID_LOCATION));
 365   ASSERT_TRUE(extension.get() != NULL);
 366
 367   ExtensionIconSet empty_icon_set;
 368   gfx::ImageSkia default_icon = GetDefaultIcon();
 369
 370   const int kRequestedSize = 24;
 371   IconImage image(profile.get(),
 372                   extension.get(),
 373                   empty_icon_set,
 374                   kRequestedSize,
 375                   default_icon,
 376                   this);
 377
 378   gfx::ImageSkiaRep representation =
 379       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 380   EXPECT_TRUE(gfx::BitmapsAreEqual(
 381       representation.sk_bitmap(),
 382       EnsureBitmapSize(
 383           default_icon.GetRepresentation(ui::SCALE_FACTOR_100P).sk_bitmap(),
 384           kRequestedSize)));
 385
 386   EXPECT_EQ(0, ImageLoadedCount());
 387   // We should have a default icon representation.
 388   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 389
 390   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 391   EXPECT_TRUE(gfx::BitmapsAreEqual(
 392       representation.sk_bitmap(),
 393       EnsureBitmapSize(
 394           default_icon.GetRepresentation(ui::SCALE_FACTOR_100P).sk_bitmap(),
 395           kRequestedSize)));
 396 }
 397
 398 // If resource set is invalid, image load should be done asynchronously and
 399 // the observer should be notified when it's done. |GetRepresentation| should
 400 // return the default icon representation once image load is done.
 401 TEST_F(ExtensionIconImageTest, InvalidResource) {
 402   scoped_ptr<Profile> profile(new TestingProfile());
 403   scoped_refptr<Extension> extension(CreateExtension(
 404       "extension_icon_image", Manifest::INVALID_LOCATION));
 405   ASSERT_TRUE(extension.get() != NULL);
 406
 407   const int kInvalidIconSize = 24;
 408   ExtensionIconSet invalid_icon_set;
 409   invalid_icon_set.Add(kInvalidIconSize, "invalid.png");
 410
 411   gfx::ImageSkia default_icon = GetDefaultIcon();
 412
 413   IconImage image(profile.get(),
 414                   extension.get(),
 415                   invalid_icon_set,
 416                   kInvalidIconSize,
 417                   default_icon,
 418                   this);
 419
 420   gfx::ImageSkiaRep representation =
 421       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 422   EXPECT_TRUE(gfx::BitmapsAreEqual(
 423       representation.sk_bitmap(),
 424       CreateBlankBitmapForScale(kInvalidIconSize, ui::SCALE_FACTOR_100P)));
 425
 426   WaitForImageLoad();
 427   EXPECT_EQ(1, ImageLoadedCount());
 428   // We should have default icon representation now.
 429   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 430
 431   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 432   EXPECT_TRUE(gfx::BitmapsAreEqual(
 433       representation.sk_bitmap(),
 434       EnsureBitmapSize(
 435           default_icon.GetRepresentation(ui::SCALE_FACTOR_100P).sk_bitmap(),
 436           kInvalidIconSize)));
 437 }
 438
 439 // Test that IconImage works with lazily (but synchronously) created default
 440 // icon when IconImage returns synchronously.
 441 TEST_F(ExtensionIconImageTest, LazyDefaultIcon) {
 442   scoped_ptr<Profile> profile(new TestingProfile());
 443   scoped_refptr<Extension> extension(CreateExtension(
 444       "extension_icon_image", Manifest::INVALID_LOCATION));
 445   ASSERT_TRUE(extension.get() != NULL);
 446
 447   gfx::ImageSkia default_icon = GetDefaultIcon();
 448   gfx::ImageSkia lazy_default_icon(new MockImageSkiaSource(default_icon),
 449                                     default_icon.size());
 450
 451   ExtensionIconSet empty_icon_set;
 452
 453   const int kRequestedSize = 128;
 454   IconImage image(profile.get(),
 455                   extension.get(),
 456                   empty_icon_set,
 457                   kRequestedSize,
 458                   lazy_default_icon,
 459                   this);
 460
 461   ASSERT_FALSE(lazy_default_icon.HasRepresentation(ui::SCALE_FACTOR_100P));
 462
 463   gfx::ImageSkiaRep representation =
 464       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 465
 466   // The resouce set is empty, so we should get the result right away.
 467   EXPECT_TRUE(lazy_default_icon.HasRepresentation(ui::SCALE_FACTOR_100P));
 468   EXPECT_TRUE(gfx::BitmapsAreEqual(
 469       representation.sk_bitmap(),
 470       EnsureBitmapSize(
 471           default_icon.GetRepresentation(ui::SCALE_FACTOR_100P).sk_bitmap(),
 472           kRequestedSize)));
 473
 474   // We should have a default icon representation.
 475   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 476 }
 477
 478 // Test that IconImage works with lazily (but synchronously) created default
 479 // icon when IconImage returns asynchronously.
 480 TEST_F(ExtensionIconImageTest, LazyDefaultIcon_AsyncIconImage) {
 481   scoped_ptr<Profile> profile(new TestingProfile());
 482   scoped_refptr<Extension> extension(CreateExtension(
 483       "extension_icon_image", Manifest::INVALID_LOCATION));
 484   ASSERT_TRUE(extension.get() != NULL);
 485
 486   gfx::ImageSkia default_icon = GetDefaultIcon();
 487   gfx::ImageSkia lazy_default_icon(new MockImageSkiaSource(default_icon),
 488                                     default_icon.size());
 489
 490   const int kInvalidIconSize = 24;
 491   ExtensionIconSet invalid_icon_set;
 492   invalid_icon_set.Add(kInvalidIconSize, "invalid.png");
 493
 494   IconImage image(profile.get(),
 495                   extension.get(),
 496                   invalid_icon_set,
 497                   kInvalidIconSize,
 498                   lazy_default_icon,
 499                   this);
 500
 501   ASSERT_FALSE(lazy_default_icon.HasRepresentation(ui::SCALE_FACTOR_100P));
 502
 503   gfx::ImageSkiaRep representation =
 504       image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 505
 506   WaitForImageLoad();
 507   EXPECT_EQ(1, ImageLoadedCount());
 508   // We should have default icon representation now.
 509   ASSERT_EQ(1u, image.image_skia().image_reps().size());
 510
 511   EXPECT_TRUE(lazy_default_icon.HasRepresentation(ui::SCALE_FACTOR_100P));
 512
 513   representation = image.image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 514   EXPECT_TRUE(gfx::BitmapsAreEqual(
 515       representation.sk_bitmap(),
 516       EnsureBitmapSize(
 517           default_icon.GetRepresentation(ui::SCALE_FACTOR_100P).sk_bitmap(),
 518           kInvalidIconSize)));
 519 }
 520
 521 // Tests behavior of image created by IconImage after IconImage host goes
 522 // away. The image should still return loaded representations. If requested
 523 // representation was not loaded while IconImage host was around, transparent
 524 // representations should be returned.
 525 TEST_F(ExtensionIconImageTest, IconImageDestruction) {
 526   scoped_ptr<Profile> profile(new TestingProfile());
 527   scoped_refptr<Extension> extension(CreateExtension(
 528       "extension_icon_image", Manifest::INVALID_LOCATION));
 529   ASSERT_TRUE(extension.get() != NULL);
 530
 531   gfx::ImageSkia default_icon = GetDefaultIcon();
 532
 533   // Load images we expect to find as representations in icon_image, so we
 534   // can later use them to validate icon_image.
 535   SkBitmap bitmap_16 = GetTestBitmap(extension.get(), "16.png", 16);
 536   ASSERT_FALSE(bitmap_16.empty());
 537
 538   scoped_ptr<IconImage> image(
 539       new IconImage(profile.get(),
 540                     extension.get(),
 541                     extensions::IconsInfo::GetIcons(extension.get()),
 542                     16,
 543                     default_icon,
 544                     this));
 545
 546   // Load an image representation.
 547   gfx::ImageSkiaRep representation =
 548       image->image_skia().GetRepresentation(ui::SCALE_FACTOR_100P);
 549
 550   WaitForImageLoad();
 551   EXPECT_EQ(1, ImageLoadedCount());
 552   ASSERT_EQ(1u, image->image_skia().image_reps().size());
 553
 554   // Stash loaded image skia, and destroy |image|.
 555   gfx::ImageSkia image_skia = image->image_skia();
 556   image.reset();
 557   extension = NULL;
 558
 559   // Image skia should still be able to get previously loaded representation.
 560   representation = image_skia.GetRepresentation(ui::SCALE_FACTOR_100P);
 561
 562   EXPECT_EQ(ui::SCALE_FACTOR_100P, representation.scale_factor());
 563   EXPECT_EQ(16, representation.pixel_width());
 564   EXPECT_TRUE(gfx::BitmapsAreEqual(representation.sk_bitmap(), bitmap_16));
 565
 566   // When requesting another representation, we should get blank image.
 567   representation = image_skia.GetRepresentation(ui::SCALE_FACTOR_200P);
 568
 569   EXPECT_TRUE(gfx::BitmapsAreEqual(
 570       representation.sk_bitmap(),
 571       CreateBlankBitmapForScale(16, ui::SCALE_FACTOR_200P)));
 572 }