chrome/browser/extensions/extension_tab_util.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_tab_util.h"
   6
   7 #include "base/strings/string_number_conversions.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
  10 #include "chrome/browser/extensions/chrome_extension_function.h"
  11 #include "chrome/browser/extensions/chrome_extension_function_details.h"
  12 #include "chrome/browser/extensions/tab_helper.h"
  13 #include "chrome/browser/extensions/window_controller.h"
  14 #include "chrome/browser/extensions/window_controller_list.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/sessions/session_tab_helper.h"
  17 #include "chrome/browser/ui/browser.h"
  18 #include "chrome/browser/ui/browser_finder.h"
  19 #include "chrome/browser/ui/browser_iterator.h"
  20 #include "chrome/browser/ui/browser_window.h"
  21 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
  22 #include "chrome/browser/ui/singleton_tabs.h"
  23 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
  24 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  25 #include "chrome/common/extensions/api/tabs.h"
  26 #include "chrome/common/url_constants.h"
  27 #include "components/url_fixer/url_fixer.h"
  28 #include "content/public/browser/favicon_status.h"
  29 #include "content/public/browser/navigation_entry.h"
  30 #include "content/public/browser/web_contents.h"
  31 #include "extensions/browser/app_window/app_window.h"
  32 #include "extensions/browser/app_window/app_window_registry.h"
  33 #include "extensions/common/constants.h"
  34 #include "extensions/common/error_utils.h"
  35 #include "extensions/common/extension.h"
  36 #include "extensions/common/feature_switch.h"
  37 #include "extensions/common/manifest_constants.h"
  38 #include "extensions/common/manifest_handlers/incognito_info.h"
  39 #include "extensions/common/manifest_handlers/options_page_info.h"
  40 #include "extensions/common/permissions/api_permission.h"
  41 #include "extensions/common/permissions/permissions_data.h"
  42 #include "url/gurl.h"
  43
  44 using content::NavigationEntry;
  45 using content::WebContents;
  46
  47 namespace extensions {
  48
  49 namespace {
  50
  51 namespace keys = tabs_constants;
  52
  53 WindowController* GetAppWindowController(const WebContents* contents) {
  54   Profile* profile = Profile::FromBrowserContext(contents->GetBrowserContext());
  55   AppWindowRegistry* registry = AppWindowRegistry::Get(profile);
  56   if (!registry)
  57     return NULL;
  58   AppWindow* app_window =
  59       registry->GetAppWindowForRenderViewHost(contents->GetRenderViewHost());
  60   if (!app_window)
  61     return NULL;
  62   return WindowControllerList::GetInstance()->FindWindowById(
  63       app_window->session_id().id());
  64 }
  65
  66 // |error_message| can optionally be passed in and will be set with an
  67 // appropriate message if the window cannot be found by id.
  68 Browser* GetBrowserInProfileWithId(Profile* profile,
  69                                    const int window_id,
  70                                    bool include_incognito,
  71                                    std::string* error_message) {
  72   Profile* incognito_profile =
  73       include_incognito && profile->HasOffTheRecordProfile()
  74           ? profile->GetOffTheRecordProfile()
  75           : NULL;
  76   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
  77     Browser* browser = *it;
  78     if ((browser->profile() == profile ||
  79          browser->profile() == incognito_profile) &&
  80         ExtensionTabUtil::GetWindowId(browser) == window_id &&
  81         browser->window()) {
  82       return browser;
  83     }
  84   }
  85
  86   if (error_message)
  87     *error_message = ErrorUtils::FormatErrorMessage(
  88         keys::kWindowNotFoundError, base::IntToString(window_id));
  89
  90   return NULL;
  91 }
  92
  93 Browser* CreateBrowser(ChromeUIThreadExtensionFunction* function,
  94                        int window_id,
  95                        std::string* error) {
  96   content::WebContents* web_contents = function->GetAssociatedWebContents();
  97   chrome::HostDesktopType desktop_type =
  98       web_contents && web_contents->GetNativeView()
  99           ? chrome::GetHostDesktopTypeForNativeView(
 100                 web_contents->GetNativeView())
 101           : chrome::GetHostDesktopTypeForNativeView(NULL);
 102   Browser::CreateParams params(
 103       Browser::TYPE_TABBED, function->GetProfile(), desktop_type);
 104   Browser* browser = new Browser(params);
 105   browser->window()->Show();
 106   return browser;
 107 }
 108
 109 }  // namespace
 110
 111 ExtensionTabUtil::OpenTabParams::OpenTabParams()
 112     : create_browser_if_needed(false) {
 113 }
 114
 115 ExtensionTabUtil::OpenTabParams::~OpenTabParams() {
 116 }
 117
 118 // Opens a new tab for a given extension. Returns NULL and sets |error| if an
 119 // error occurs.
 120 base::DictionaryValue* ExtensionTabUtil::OpenTab(
 121     ChromeUIThreadExtensionFunction* function,
 122     const OpenTabParams& params,
 123     std::string* error) {
 124   // windowId defaults to "current" window.
 125   int window_id = extension_misc::kCurrentWindowId;
 126   if (params.window_id.get())
 127     window_id = *params.window_id;
 128
 129   Browser* browser = GetBrowserFromWindowID(function, window_id, error);
 130   if (!browser) {
 131     if (!params.create_browser_if_needed) {
 132       return NULL;
 133     }
 134     browser = CreateBrowser(function, window_id, error);
 135     if (!browser)
 136       return NULL;
 137   }
 138
 139   // Ensure the selected browser is tabbed.
 140   if (!browser->is_type_tabbed() && browser->IsAttemptingToCloseBrowser())
 141     browser = chrome::FindTabbedBrowser(function->GetProfile(),
 142                                         function->include_incognito(),
 143                                         browser->host_desktop_type());
 144
 145   if (!browser || !browser->window()) {
 146     if (error)
 147       *error = keys::kNoCurrentWindowError;
 148     return NULL;
 149   }
 150
 151   // TODO(jstritar): Add a constant, chrome.tabs.TAB_ID_ACTIVE, that
 152   // represents the active tab.
 153   WebContents* opener = NULL;
 154   if (params.opener_tab_id.get()) {
 155     int opener_id = *params.opener_tab_id;
 156
 157     if (!ExtensionTabUtil::GetTabById(opener_id,
 158                                       function->GetProfile(),
 159                                       function->include_incognito(),
 160                                       NULL,
 161                                       NULL,
 162                                       &opener,
 163                                       NULL)) {
 164       if (error) {
 165         *error = ErrorUtils::FormatErrorMessage(keys::kTabNotFoundError,
 166                                                 base::IntToString(opener_id));
 167       }
 168       return NULL;
 169     }
 170   }
 171
 172   // TODO(rafaelw): handle setting remaining tab properties:
 173   // -title
 174   // -favIconUrl
 175
 176   GURL url;
 177   if (params.url.get()) {
 178     std::string url_string = *params.url;
 179     url = ExtensionTabUtil::ResolvePossiblyRelativeURL(url_string,
 180                                                        function->extension());
 181     if (!url.is_valid()) {
 182       *error =
 183           ErrorUtils::FormatErrorMessage(keys::kInvalidUrlError, url_string);
 184       return NULL;
 185     }
 186   } else {
 187     url = GURL(chrome::kChromeUINewTabURL);
 188   }
 189
 190   // Don't let extensions crash the browser or renderers.
 191   if (ExtensionTabUtil::IsCrashURL(url)) {
 192     *error = keys::kNoCrashBrowserError;
 193     return NULL;
 194   }
 195
 196   // Default to foreground for the new tab. The presence of 'active' property
 197   // will override this default.
 198   bool active = true;
 199   if (params.active.get())
 200     active = *params.active;
 201
 202   // Default to not pinning the tab. Setting the 'pinned' property to true
 203   // will override this default.
 204   bool pinned = false;
 205   if (params.pinned.get())
 206     pinned = *params.pinned;
 207
 208   // We can't load extension URLs into incognito windows unless the extension
 209   // uses split mode. Special case to fall back to a tabbed window.
 210   if (url.SchemeIs(kExtensionScheme) &&
 211       !IncognitoInfo::IsSplitMode(function->extension()) &&
 212       browser->profile()->IsOffTheRecord()) {
 213     Profile* profile = browser->profile()->GetOriginalProfile();
 214     chrome::HostDesktopType desktop_type = browser->host_desktop_type();
 215
 216     browser = chrome::FindTabbedBrowser(profile, false, desktop_type);
 217     if (!browser) {
 218       browser = new Browser(
 219           Browser::CreateParams(Browser::TYPE_TABBED, profile, desktop_type));
 220       browser->window()->Show();
 221     }
 222   }
 223
 224   // If index is specified, honor the value, but keep it bound to
 225   // -1 <= index <= tab_strip->count() where -1 invokes the default behavior.
 226   int index = -1;
 227   if (params.index.get())
 228     index = *params.index;
 229
 230   TabStripModel* tab_strip = browser->tab_strip_model();
 231
 232   index = std::min(std::max(index, -1), tab_strip->count());
 233
 234   int add_types = active ? TabStripModel::ADD_ACTIVE : TabStripModel::ADD_NONE;
 235   add_types |= TabStripModel::ADD_FORCE_INDEX;
 236   if (pinned)
 237     add_types |= TabStripModel::ADD_PINNED;
 238   chrome::NavigateParams navigate_params(
 239       browser, url, ui::PAGE_TRANSITION_LINK);
 240   navigate_params.disposition =
 241       active ? NEW_FOREGROUND_TAB : NEW_BACKGROUND_TAB;
 242   navigate_params.tabstrip_index = index;
 243   navigate_params.tabstrip_add_types = add_types;
 244   chrome::Navigate(&navigate_params);
 245
 246   // The tab may have been created in a different window, so make sure we look
 247   // at the right tab strip.
 248   tab_strip = navigate_params.browser->tab_strip_model();
 249   int new_index =
 250       tab_strip->GetIndexOfWebContents(navigate_params.target_contents);
 251   if (opener)
 252     tab_strip->SetOpenerOfWebContentsAt(new_index, opener);
 253
 254   if (active)
 255     navigate_params.target_contents->SetInitialFocus();
 256
 257   // Return data about the newly created tab.
 258   return ExtensionTabUtil::CreateTabValue(navigate_params.target_contents,
 259                                           tab_strip,
 260                                           new_index,
 261                                           function->extension());
 262 }
 263
 264 Browser* ExtensionTabUtil::GetBrowserFromWindowID(
 265     ChromeUIThreadExtensionFunction* function,
 266     int window_id,
 267     std::string* error) {
 268   if (window_id == extension_misc::kCurrentWindowId) {
 269     Browser* result = function->GetCurrentBrowser();
 270     if (!result || !result->window()) {
 271       if (error)
 272         *error = keys::kNoCurrentWindowError;
 273       return NULL;
 274     }
 275     return result;
 276   } else {
 277     return GetBrowserInProfileWithId(function->GetProfile(),
 278                                      window_id,
 279                                      function->include_incognito(),
 280                                      error);
 281   }
 282 }
 283
 284 Browser* ExtensionTabUtil::GetBrowserFromWindowID(
 285     const ChromeExtensionFunctionDetails& details,
 286     int window_id,
 287     std::string* error) {
 288   if (window_id == extension_misc::kCurrentWindowId) {
 289     Browser* result = details.GetCurrentBrowser();
 290     if (!result || !result->window()) {
 291       if (error)
 292         *error = keys::kNoCurrentWindowError;
 293       return NULL;
 294     }
 295     return result;
 296   } else {
 297     return GetBrowserInProfileWithId(details.GetProfile(),
 298                                      window_id,
 299                                      details.function()->include_incognito(),
 300                                      error);
 301   }
 302 }
 303
 304 int ExtensionTabUtil::GetWindowId(const Browser* browser) {
 305   return browser->session_id().id();
 306 }
 307
 308 int ExtensionTabUtil::GetWindowIdOfTabStripModel(
 309     const TabStripModel* tab_strip_model) {
 310   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 311     if (it->tab_strip_model() == tab_strip_model)
 312       return GetWindowId(*it);
 313   }
 314   return -1;
 315 }
 316
 317 int ExtensionTabUtil::GetTabId(const WebContents* web_contents) {
 318   return SessionTabHelper::IdForTab(web_contents);
 319 }
 320
 321 std::string ExtensionTabUtil::GetTabStatusText(bool is_loading) {
 322   return is_loading ? keys::kStatusValueLoading : keys::kStatusValueComplete;
 323 }
 324
 325 int ExtensionTabUtil::GetWindowIdOfTab(const WebContents* web_contents) {
 326   return SessionTabHelper::IdForWindowContainingTab(web_contents);
 327 }
 328
 329 base::DictionaryValue* ExtensionTabUtil::CreateTabValue(
 330     WebContents* contents,
 331     TabStripModel* tab_strip,
 332     int tab_index,
 333     const Extension* extension) {
 334   // If we have a matching AppWindow with a controller, get the tab value
 335   // from its controller instead.
 336   WindowController* controller = GetAppWindowController(contents);
 337   if (controller &&
 338       (!extension || controller->IsVisibleToExtension(extension))) {
 339     return controller->CreateTabValue(extension, tab_index);
 340   }
 341   base::DictionaryValue* result =
 342       CreateTabValue(contents, tab_strip, tab_index);
 343   ScrubTabValueForExtension(contents, extension, result);
 344   return result;
 345 }
 346
 347 base::ListValue* ExtensionTabUtil::CreateTabList(
 348     const Browser* browser,
 349     const Extension* extension) {
 350   base::ListValue* tab_list = new base::ListValue();
 351   TabStripModel* tab_strip = browser->tab_strip_model();
 352   for (int i = 0; i < tab_strip->count(); ++i) {
 353     tab_list->Append(CreateTabValue(tab_strip->GetWebContentsAt(i),
 354                                     tab_strip,
 355                                     i,
 356                                     extension));
 357   }
 358
 359   return tab_list;
 360 }
 361
 362 base::DictionaryValue* ExtensionTabUtil::CreateTabValue(
 363     WebContents* contents,
 364     TabStripModel* tab_strip,
 365     int tab_index) {
 366   // If we have a matching AppWindow with a controller, get the tab value
 367   // from its controller instead.
 368   WindowController* controller = GetAppWindowController(contents);
 369   if (controller)
 370     return controller->CreateTabValue(NULL, tab_index);
 371
 372   if (!tab_strip)
 373     ExtensionTabUtil::GetTabStripModel(contents, &tab_strip, &tab_index);
 374
 375   base::DictionaryValue* result = new base::DictionaryValue();
 376   bool is_loading = contents->IsLoading();
 377   result->SetInteger(keys::kIdKey, GetTabId(contents));
 378   result->SetInteger(keys::kIndexKey, tab_index);
 379   result->SetInteger(keys::kWindowIdKey, GetWindowIdOfTab(contents));
 380   result->SetString(keys::kStatusKey, GetTabStatusText(is_loading));
 381   result->SetBoolean(keys::kActiveKey,
 382                      tab_strip && tab_index == tab_strip->active_index());
 383   result->SetBoolean(keys::kSelectedKey,
 384                      tab_strip && tab_index == tab_strip->active_index());
 385   result->SetBoolean(keys::kHighlightedKey,
 386                    tab_strip && tab_strip->IsTabSelected(tab_index));
 387   result->SetBoolean(keys::kPinnedKey,
 388                      tab_strip && tab_strip->IsTabPinned(tab_index));
 389   result->SetBoolean(keys::kIncognitoKey,
 390                      contents->GetBrowserContext()->IsOffTheRecord());
 391   result->SetInteger(keys::kWidthKey,
 392                      contents->GetContainerBounds().size().width());
 393   result->SetInteger(keys::kHeightKey,
 394                      contents->GetContainerBounds().size().height());
 395
 396   // Privacy-sensitive fields: these should be stripped off by
 397   // ScrubTabValueForExtension if the extension should not see them.
 398   result->SetString(keys::kUrlKey, contents->GetURL().spec());
 399   result->SetString(keys::kTitleKey, contents->GetTitle());
 400   if (!is_loading) {
 401     NavigationEntry* entry = contents->GetController().GetVisibleEntry();
 402     if (entry && entry->GetFavicon().valid)
 403       result->SetString(keys::kFaviconUrlKey, entry->GetFavicon().url.spec());
 404   }
 405
 406   if (tab_strip) {
 407     WebContents* opener = tab_strip->GetOpenerOfWebContentsAt(tab_index);
 408     if (opener)
 409       result->SetInteger(keys::kOpenerTabIdKey, GetTabId(opener));
 410   }
 411
 412   return result;
 413 }
 414
 415 void ExtensionTabUtil::ScrubTabValueForExtension(
 416     WebContents* contents,
 417     const Extension* extension,
 418     base::DictionaryValue* tab_info) {
 419   bool has_permission = extension &&
 420                         extension->permissions_data()->HasAPIPermissionForTab(
 421                             GetTabId(contents), APIPermission::kTab);
 422
 423   if (!has_permission) {
 424     tab_info->Remove(keys::kUrlKey, NULL);
 425     tab_info->Remove(keys::kTitleKey, NULL);
 426     tab_info->Remove(keys::kFaviconUrlKey, NULL);
 427   }
 428 }
 429
 430 void ExtensionTabUtil::ScrubTabForExtension(const Extension* extension,
 431                                             api::tabs::Tab* tab) {
 432   bool has_permission =
 433       extension &&
 434       extension->permissions_data()->HasAPIPermission(APIPermission::kTab);
 435
 436   if (!has_permission) {
 437     tab->url.reset();
 438     tab->title.reset();
 439     tab->fav_icon_url.reset();
 440   }
 441 }
 442
 443 bool ExtensionTabUtil::GetTabStripModel(const WebContents* web_contents,
 444                                         TabStripModel** tab_strip_model,
 445                                         int* tab_index) {
 446   DCHECK(web_contents);
 447   DCHECK(tab_strip_model);
 448   DCHECK(tab_index);
 449
 450   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 451     TabStripModel* tab_strip = it->tab_strip_model();
 452     int index = tab_strip->GetIndexOfWebContents(web_contents);
 453     if (index != -1) {
 454       *tab_strip_model = tab_strip;
 455       *tab_index = index;
 456       return true;
 457     }
 458   }
 459
 460   return false;
 461 }
 462
 463 bool ExtensionTabUtil::GetDefaultTab(Browser* browser,
 464                                      WebContents** contents,
 465                                      int* tab_id) {
 466   DCHECK(browser);
 467   DCHECK(contents);
 468
 469   *contents = browser->tab_strip_model()->GetActiveWebContents();
 470   if (*contents) {
 471     if (tab_id)
 472       *tab_id = GetTabId(*contents);
 473     return true;
 474   }
 475
 476   return false;
 477 }
 478
 479 bool ExtensionTabUtil::GetTabById(int tab_id,
 480                                   content::BrowserContext* browser_context,
 481                                   bool include_incognito,
 482                                   Browser** browser,
 483                                   TabStripModel** tab_strip,
 484                                   WebContents** contents,
 485                                   int* tab_index) {
 486   Profile* profile = Profile::FromBrowserContext(browser_context);
 487   Profile* incognito_profile =
 488       include_incognito && profile->HasOffTheRecordProfile() ?
 489           profile->GetOffTheRecordProfile() : NULL;
 490   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 491     Browser* target_browser = *it;
 492     if (target_browser->profile() == profile ||
 493         target_browser->profile() == incognito_profile) {
 494       TabStripModel* target_tab_strip = target_browser->tab_strip_model();
 495       for (int i = 0; i < target_tab_strip->count(); ++i) {
 496         WebContents* target_contents = target_tab_strip->GetWebContentsAt(i);
 497         if (SessionTabHelper::IdForTab(target_contents) == tab_id) {
 498           if (browser)
 499             *browser = target_browser;
 500           if (tab_strip)
 501             *tab_strip = target_tab_strip;
 502           if (contents)
 503             *contents = target_contents;
 504           if (tab_index)
 505             *tab_index = i;
 506           return true;
 507         }
 508       }
 509     }
 510   }
 511   return false;
 512 }
 513
 514 GURL ExtensionTabUtil::ResolvePossiblyRelativeURL(const std::string& url_string,
 515                                                   const Extension* extension) {
 516   GURL url = GURL(url_string);
 517   if (!url.is_valid())
 518     url = extension->GetResourceURL(url_string);
 519
 520   return url;
 521 }
 522
 523 bool ExtensionTabUtil::IsCrashURL(const GURL& url) {
 524   // Check a fixed-up URL, to normalize the scheme and parse hosts correctly.
 525   GURL fixed_url =
 526       url_fixer::FixupURL(url.possibly_invalid_spec(), std::string());
 527   return (fixed_url.SchemeIs(content::kChromeUIScheme) &&
 528           (fixed_url.host() == content::kChromeUIBrowserCrashHost ||
 529            fixed_url.host() == chrome::kChromeUICrashHost));
 530 }
 531
 532 void ExtensionTabUtil::CreateTab(WebContents* web_contents,
 533                                  const std::string& extension_id,
 534                                  WindowOpenDisposition disposition,
 535                                  const gfx::Rect& initial_rect,
 536                                  bool user_gesture) {
 537   Profile* profile =
 538       Profile::FromBrowserContext(web_contents->GetBrowserContext());
 539   chrome::HostDesktopType active_desktop = chrome::GetActiveDesktop();
 540   Browser* browser = chrome::FindTabbedBrowser(profile, false, active_desktop);
 541   const bool browser_created = !browser;
 542   if (!browser)
 543     browser = new Browser(Browser::CreateParams(profile, active_desktop));
 544   chrome::NavigateParams params(browser, web_contents);
 545
 546   // The extension_app_id parameter ends up as app_name in the Browser
 547   // which causes the Browser to return true for is_app().  This affects
 548   // among other things, whether the location bar gets displayed.
 549   // TODO(mpcomplete): This seems wrong. What if the extension content is hosted
 550   // in a tab?
 551   if (disposition == NEW_POPUP)
 552     params.extension_app_id = extension_id;
 553
 554   params.disposition = disposition;
 555   params.window_bounds = initial_rect;
 556   params.window_action = chrome::NavigateParams::SHOW_WINDOW;
 557   params.user_gesture = user_gesture;
 558   chrome::Navigate(&params);
 559
 560   // Close the browser if chrome::Navigate created a new one.
 561   if (browser_created && (browser != params.browser))
 562     browser->window()->Close();
 563 }
 564
 565 // static
 566 void ExtensionTabUtil::ForEachTab(
 567     const base::Callback<void(WebContents*)>& callback) {
 568   for (TabContentsIterator iterator; !iterator.done(); iterator.Next())
 569     callback.Run(*iterator);
 570 }
 571
 572 // static
 573 WindowController* ExtensionTabUtil::GetWindowControllerOfTab(
 574     const WebContents* web_contents) {
 575   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
 576   if (browser != NULL)
 577     return browser->extension_window_controller();
 578
 579   return NULL;
 580 }
 581
 582 bool ExtensionTabUtil::OpenOptionsPage(const Extension* extension,
 583                                        Browser* browser) {
 584   if (!OptionsPageInfo::HasOptionsPage(extension))
 585     return false;
 586
 587   // Force the options page to open in non-OTR window, because it won't be
 588   // able to save settings from OTR.
 589   scoped_ptr<chrome::ScopedTabbedBrowserDisplayer> displayer;
 590   if (browser->profile()->IsOffTheRecord()) {
 591     displayer.reset(new chrome::ScopedTabbedBrowserDisplayer(
 592         browser->profile()->GetOriginalProfile(),
 593         browser->host_desktop_type()));
 594     browser = displayer->browser();
 595   }
 596
 597   GURL url_to_navigate;
 598   if (OptionsPageInfo::ShouldOpenInTab(extension)) {
 599     // Options page tab is simply e.g. chrome-extension://.../options.html.
 600     url_to_navigate = OptionsPageInfo::GetOptionsPage(extension);
 601   } else {
 602     // Options page tab is Extension settings pointed at that Extension's ID,
 603     // e.g. chrome://extensions?options=...
 604     url_to_navigate = GURL(chrome::kChromeUIExtensionsURL);
 605     GURL::Replacements replacements;
 606     std::string query =
 607         base::StringPrintf("options=%s", extension->id().c_str());
 608     replacements.SetQueryStr(query);
 609     url_to_navigate = url_to_navigate.ReplaceComponents(replacements);
 610   }
 611
 612   chrome::NavigateParams params(
 613       chrome::GetSingletonTabNavigateParams(browser, url_to_navigate));
 614   params.path_behavior = chrome::NavigateParams::IGNORE_AND_NAVIGATE;
 615   params.url = url_to_navigate;
 616   chrome::ShowSingletonTabOverwritingNTP(browser, params);
 617   return true;
 618 }
 619
 620 }  // namespace extensions