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     // TODO(rpaquay): Error message?
 147     return NULL;
 148   }
 149
 150   // TODO(jstritar): Add a constant, chrome.tabs.TAB_ID_ACTIVE, that
 151   // represents the active tab.
 152   WebContents* opener = NULL;
 153   if (params.opener_tab_id.get()) {
 154     int opener_id = *params.opener_tab_id;
 155
 156     if (!ExtensionTabUtil::GetTabById(opener_id,
 157                                       function->GetProfile(),
 158                                       function->include_incognito(),
 159                                       NULL,
 160                                       NULL,
 161                                       &opener,
 162                                       NULL)) {
 163       // TODO(rpaquay): Error message?
 164       return NULL;
 165     }
 166   }
 167
 168   // TODO(rafaelw): handle setting remaining tab properties:
 169   // -title
 170   // -favIconUrl
 171
 172   GURL url;
 173   if (params.url.get()) {
 174     std::string url_string = *params.url;
 175     url = ExtensionTabUtil::ResolvePossiblyRelativeURL(url_string,
 176                                                        function->extension());
 177     if (!url.is_valid()) {
 178       *error =
 179           ErrorUtils::FormatErrorMessage(keys::kInvalidUrlError, url_string);
 180       return NULL;
 181     }
 182   } else {
 183     url = GURL(chrome::kChromeUINewTabURL);
 184   }
 185
 186   // Don't let extensions crash the browser or renderers.
 187   if (ExtensionTabUtil::IsCrashURL(url)) {
 188     *error = keys::kNoCrashBrowserError;
 189     return NULL;
 190   }
 191
 192   // Default to foreground for the new tab. The presence of 'active' property
 193   // will override this default.
 194   bool active = true;
 195   if (params.active.get())
 196     active = *params.active;
 197
 198   // Default to not pinning the tab. Setting the 'pinned' property to true
 199   // will override this default.
 200   bool pinned = false;
 201   if (params.pinned.get())
 202     pinned = *params.pinned;
 203
 204   // We can't load extension URLs into incognito windows unless the extension
 205   // uses split mode. Special case to fall back to a tabbed window.
 206   if (url.SchemeIs(kExtensionScheme) &&
 207       !IncognitoInfo::IsSplitMode(function->extension()) &&
 208       browser->profile()->IsOffTheRecord()) {
 209     Profile* profile = browser->profile()->GetOriginalProfile();
 210     chrome::HostDesktopType desktop_type = browser->host_desktop_type();
 211
 212     browser = chrome::FindTabbedBrowser(profile, false, desktop_type);
 213     if (!browser) {
 214       browser = new Browser(
 215           Browser::CreateParams(Browser::TYPE_TABBED, profile, desktop_type));
 216       browser->window()->Show();
 217     }
 218   }
 219
 220   // If index is specified, honor the value, but keep it bound to
 221   // -1 <= index <= tab_strip->count() where -1 invokes the default behavior.
 222   int index = -1;
 223   if (params.index.get())
 224     index = *params.index;
 225
 226   TabStripModel* tab_strip = browser->tab_strip_model();
 227
 228   index = std::min(std::max(index, -1), tab_strip->count());
 229
 230   int add_types = active ? TabStripModel::ADD_ACTIVE : TabStripModel::ADD_NONE;
 231   add_types |= TabStripModel::ADD_FORCE_INDEX;
 232   if (pinned)
 233     add_types |= TabStripModel::ADD_PINNED;
 234   chrome::NavigateParams navigate_params(
 235       browser, url, ui::PAGE_TRANSITION_LINK);
 236   navigate_params.disposition =
 237       active ? NEW_FOREGROUND_TAB : NEW_BACKGROUND_TAB;
 238   navigate_params.tabstrip_index = index;
 239   navigate_params.tabstrip_add_types = add_types;
 240   chrome::Navigate(&navigate_params);
 241
 242   // The tab may have been created in a different window, so make sure we look
 243   // at the right tab strip.
 244   tab_strip = navigate_params.browser->tab_strip_model();
 245   int new_index =
 246       tab_strip->GetIndexOfWebContents(navigate_params.target_contents);
 247   if (opener)
 248     tab_strip->SetOpenerOfWebContentsAt(new_index, opener);
 249
 250   if (active)
 251     navigate_params.target_contents->SetInitialFocus();
 252
 253   // Return data about the newly created tab.
 254   return ExtensionTabUtil::CreateTabValue(navigate_params.target_contents,
 255                                           tab_strip,
 256                                           new_index,
 257                                           function->extension());
 258 }
 259
 260 Browser* ExtensionTabUtil::GetBrowserFromWindowID(
 261     ChromeUIThreadExtensionFunction* function,
 262     int window_id,
 263     std::string* error) {
 264   if (window_id == extension_misc::kCurrentWindowId) {
 265     Browser* result = function->GetCurrentBrowser();
 266     if (!result || !result->window()) {
 267       if (error)
 268         *error = keys::kNoCurrentWindowError;
 269       return NULL;
 270     }
 271     return result;
 272   } else {
 273     return GetBrowserInProfileWithId(function->GetProfile(),
 274                                      window_id,
 275                                      function->include_incognito(),
 276                                      error);
 277   }
 278 }
 279
 280 Browser* ExtensionTabUtil::GetBrowserFromWindowID(
 281     const ChromeExtensionFunctionDetails& details,
 282     int window_id,
 283     std::string* error) {
 284   if (window_id == extension_misc::kCurrentWindowId) {
 285     Browser* result = details.GetCurrentBrowser();
 286     if (!result || !result->window()) {
 287       if (error)
 288         *error = keys::kNoCurrentWindowError;
 289       return NULL;
 290     }
 291     return result;
 292   } else {
 293     return GetBrowserInProfileWithId(details.GetProfile(),
 294                                      window_id,
 295                                      details.function()->include_incognito(),
 296                                      error);
 297   }
 298 }
 299
 300 int ExtensionTabUtil::GetWindowId(const Browser* browser) {
 301   return browser->session_id().id();
 302 }
 303
 304 int ExtensionTabUtil::GetWindowIdOfTabStripModel(
 305     const TabStripModel* tab_strip_model) {
 306   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 307     if (it->tab_strip_model() == tab_strip_model)
 308       return GetWindowId(*it);
 309   }
 310   return -1;
 311 }
 312
 313 int ExtensionTabUtil::GetTabId(const WebContents* web_contents) {
 314   return SessionTabHelper::IdForTab(web_contents);
 315 }
 316
 317 std::string ExtensionTabUtil::GetTabStatusText(bool is_loading) {
 318   return is_loading ? keys::kStatusValueLoading : keys::kStatusValueComplete;
 319 }
 320
 321 int ExtensionTabUtil::GetWindowIdOfTab(const WebContents* web_contents) {
 322   return SessionTabHelper::IdForWindowContainingTab(web_contents);
 323 }
 324
 325 base::DictionaryValue* ExtensionTabUtil::CreateTabValue(
 326     WebContents* contents,
 327     TabStripModel* tab_strip,
 328     int tab_index,
 329     const Extension* extension) {
 330   // If we have a matching AppWindow with a controller, get the tab value
 331   // from its controller instead.
 332   WindowController* controller = GetAppWindowController(contents);
 333   if (controller &&
 334       (!extension || controller->IsVisibleToExtension(extension))) {
 335     return controller->CreateTabValue(extension, tab_index);
 336   }
 337   base::DictionaryValue* result =
 338       CreateTabValue(contents, tab_strip, tab_index);
 339   ScrubTabValueForExtension(contents, extension, result);
 340   return result;
 341 }
 342
 343 base::ListValue* ExtensionTabUtil::CreateTabList(
 344     const Browser* browser,
 345     const Extension* extension) {
 346   base::ListValue* tab_list = new base::ListValue();
 347   TabStripModel* tab_strip = browser->tab_strip_model();
 348   for (int i = 0; i < tab_strip->count(); ++i) {
 349     tab_list->Append(CreateTabValue(tab_strip->GetWebContentsAt(i),
 350                                     tab_strip,
 351                                     i,
 352                                     extension));
 353   }
 354
 355   return tab_list;
 356 }
 357
 358 base::DictionaryValue* ExtensionTabUtil::CreateTabValue(
 359     WebContents* contents,
 360     TabStripModel* tab_strip,
 361     int tab_index) {
 362   // If we have a matching AppWindow with a controller, get the tab value
 363   // from its controller instead.
 364   WindowController* controller = GetAppWindowController(contents);
 365   if (controller)
 366     return controller->CreateTabValue(NULL, tab_index);
 367
 368   if (!tab_strip)
 369     ExtensionTabUtil::GetTabStripModel(contents, &tab_strip, &tab_index);
 370
 371   base::DictionaryValue* result = new base::DictionaryValue();
 372   bool is_loading = contents->IsLoading();
 373   result->SetInteger(keys::kIdKey, GetTabId(contents));
 374   result->SetInteger(keys::kIndexKey, tab_index);
 375   result->SetInteger(keys::kWindowIdKey, GetWindowIdOfTab(contents));
 376   result->SetString(keys::kStatusKey, GetTabStatusText(is_loading));
 377   result->SetBoolean(keys::kActiveKey,
 378                      tab_strip && tab_index == tab_strip->active_index());
 379   result->SetBoolean(keys::kSelectedKey,
 380                      tab_strip && tab_index == tab_strip->active_index());
 381   result->SetBoolean(keys::kHighlightedKey,
 382                    tab_strip && tab_strip->IsTabSelected(tab_index));
 383   result->SetBoolean(keys::kPinnedKey,
 384                      tab_strip && tab_strip->IsTabPinned(tab_index));
 385   result->SetBoolean(keys::kIncognitoKey,
 386                      contents->GetBrowserContext()->IsOffTheRecord());
 387   result->SetInteger(keys::kWidthKey,
 388                      contents->GetContainerBounds().size().width());
 389   result->SetInteger(keys::kHeightKey,
 390                      contents->GetContainerBounds().size().height());
 391
 392   // Privacy-sensitive fields: these should be stripped off by
 393   // ScrubTabValueForExtension if the extension should not see them.
 394   result->SetString(keys::kUrlKey, contents->GetURL().spec());
 395   result->SetString(keys::kTitleKey, contents->GetTitle());
 396   if (!is_loading) {
 397     NavigationEntry* entry = contents->GetController().GetVisibleEntry();
 398     if (entry && entry->GetFavicon().valid)
 399       result->SetString(keys::kFaviconUrlKey, entry->GetFavicon().url.spec());
 400   }
 401
 402   if (tab_strip) {
 403     WebContents* opener = tab_strip->GetOpenerOfWebContentsAt(tab_index);
 404     if (opener)
 405       result->SetInteger(keys::kOpenerTabIdKey, GetTabId(opener));
 406   }
 407
 408   return result;
 409 }
 410
 411 void ExtensionTabUtil::ScrubTabValueForExtension(
 412     WebContents* contents,
 413     const Extension* extension,
 414     base::DictionaryValue* tab_info) {
 415   bool has_permission = extension &&
 416                         extension->permissions_data()->HasAPIPermissionForTab(
 417                             GetTabId(contents), APIPermission::kTab);
 418
 419   if (!has_permission) {
 420     tab_info->Remove(keys::kUrlKey, NULL);
 421     tab_info->Remove(keys::kTitleKey, NULL);
 422     tab_info->Remove(keys::kFaviconUrlKey, NULL);
 423   }
 424 }
 425
 426 void ExtensionTabUtil::ScrubTabForExtension(const Extension* extension,
 427                                             api::tabs::Tab* tab) {
 428   bool has_permission =
 429       extension &&
 430       extension->permissions_data()->HasAPIPermission(APIPermission::kTab);
 431
 432   if (!has_permission) {
 433     tab->url.reset();
 434     tab->title.reset();
 435     tab->fav_icon_url.reset();
 436   }
 437 }
 438
 439 bool ExtensionTabUtil::GetTabStripModel(const WebContents* web_contents,
 440                                         TabStripModel** tab_strip_model,
 441                                         int* tab_index) {
 442   DCHECK(web_contents);
 443   DCHECK(tab_strip_model);
 444   DCHECK(tab_index);
 445
 446   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 447     TabStripModel* tab_strip = it->tab_strip_model();
 448     int index = tab_strip->GetIndexOfWebContents(web_contents);
 449     if (index != -1) {
 450       *tab_strip_model = tab_strip;
 451       *tab_index = index;
 452       return true;
 453     }
 454   }
 455
 456   return false;
 457 }
 458
 459 bool ExtensionTabUtil::GetDefaultTab(Browser* browser,
 460                                      WebContents** contents,
 461                                      int* tab_id) {
 462   DCHECK(browser);
 463   DCHECK(contents);
 464
 465   *contents = browser->tab_strip_model()->GetActiveWebContents();
 466   if (*contents) {
 467     if (tab_id)
 468       *tab_id = GetTabId(*contents);
 469     return true;
 470   }
 471
 472   return false;
 473 }
 474
 475 bool ExtensionTabUtil::GetTabById(int tab_id,
 476                                   content::BrowserContext* browser_context,
 477                                   bool include_incognito,
 478                                   Browser** browser,
 479                                   TabStripModel** tab_strip,
 480                                   WebContents** contents,
 481                                   int* tab_index) {
 482   Profile* profile = Profile::FromBrowserContext(browser_context);
 483   Profile* incognito_profile =
 484       include_incognito && profile->HasOffTheRecordProfile() ?
 485           profile->GetOffTheRecordProfile() : NULL;
 486   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 487     Browser* target_browser = *it;
 488     if (target_browser->profile() == profile ||
 489         target_browser->profile() == incognito_profile) {
 490       TabStripModel* target_tab_strip = target_browser->tab_strip_model();
 491       for (int i = 0; i < target_tab_strip->count(); ++i) {
 492         WebContents* target_contents = target_tab_strip->GetWebContentsAt(i);
 493         if (SessionTabHelper::IdForTab(target_contents) == tab_id) {
 494           if (browser)
 495             *browser = target_browser;
 496           if (tab_strip)
 497             *tab_strip = target_tab_strip;
 498           if (contents)
 499             *contents = target_contents;
 500           if (tab_index)
 501             *tab_index = i;
 502           return true;
 503         }
 504       }
 505     }
 506   }
 507   return false;
 508 }
 509
 510 GURL ExtensionTabUtil::ResolvePossiblyRelativeURL(const std::string& url_string,
 511                                                   const Extension* extension) {
 512   GURL url = GURL(url_string);
 513   if (!url.is_valid())
 514     url = extension->GetResourceURL(url_string);
 515
 516   return url;
 517 }
 518
 519 bool ExtensionTabUtil::IsCrashURL(const GURL& url) {
 520   // Check a fixed-up URL, to normalize the scheme and parse hosts correctly.
 521   GURL fixed_url =
 522       url_fixer::FixupURL(url.possibly_invalid_spec(), std::string());
 523   return (fixed_url.SchemeIs(content::kChromeUIScheme) &&
 524           (fixed_url.host() == content::kChromeUIBrowserCrashHost ||
 525            fixed_url.host() == chrome::kChromeUICrashHost));
 526 }
 527
 528 void ExtensionTabUtil::CreateTab(WebContents* web_contents,
 529                                  const std::string& extension_id,
 530                                  WindowOpenDisposition disposition,
 531                                  const gfx::Rect& initial_rect,
 532                                  bool user_gesture) {
 533   Profile* profile =
 534       Profile::FromBrowserContext(web_contents->GetBrowserContext());
 535   chrome::HostDesktopType active_desktop = chrome::GetActiveDesktop();
 536   Browser* browser = chrome::FindTabbedBrowser(profile, false, active_desktop);
 537   const bool browser_created = !browser;
 538   if (!browser)
 539     browser = new Browser(Browser::CreateParams(profile, active_desktop));
 540   chrome::NavigateParams params(browser, web_contents);
 541
 542   // The extension_app_id parameter ends up as app_name in the Browser
 543   // which causes the Browser to return true for is_app().  This affects
 544   // among other things, whether the location bar gets displayed.
 545   // TODO(mpcomplete): This seems wrong. What if the extension content is hosted
 546   // in a tab?
 547   if (disposition == NEW_POPUP)
 548     params.extension_app_id = extension_id;
 549
 550   params.disposition = disposition;
 551   params.window_bounds = initial_rect;
 552   params.window_action = chrome::NavigateParams::SHOW_WINDOW;
 553   params.user_gesture = user_gesture;
 554   chrome::Navigate(&params);
 555
 556   // Close the browser if chrome::Navigate created a new one.
 557   if (browser_created && (browser != params.browser))
 558     browser->window()->Close();
 559 }
 560
 561 // static
 562 void ExtensionTabUtil::ForEachTab(
 563     const base::Callback<void(WebContents*)>& callback) {
 564   for (TabContentsIterator iterator; !iterator.done(); iterator.Next())
 565     callback.Run(*iterator);
 566 }
 567
 568 // static
 569 WindowController* ExtensionTabUtil::GetWindowControllerOfTab(
 570     const WebContents* web_contents) {
 571   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
 572   if (browser != NULL)
 573     return browser->extension_window_controller();
 574
 575   return NULL;
 576 }
 577
 578 bool ExtensionTabUtil::OpenOptionsPage(const Extension* extension,
 579                                        Browser* browser) {
 580   if (!OptionsPageInfo::HasOptionsPage(extension))
 581     return false;
 582
 583   // Force the options page to open in non-OTR window, because it won't be
 584   // able to save settings from OTR.
 585   scoped_ptr<chrome::ScopedTabbedBrowserDisplayer> displayer;
 586   if (browser->profile()->IsOffTheRecord()) {
 587     displayer.reset(new chrome::ScopedTabbedBrowserDisplayer(
 588         browser->profile()->GetOriginalProfile(),
 589         browser->host_desktop_type()));
 590     browser = displayer->browser();
 591   }
 592
 593   if (!OptionsPageInfo::ShouldOpenInTab(extension)) {
 594     // If we should embed the options page for this extension, open
 595     // chrome://extensions in a new tab and show the extension options in an
 596     // embedded popup.
 597     chrome::NavigateParams params(chrome::GetSingletonTabNavigateParams(
 598         browser, GURL(chrome::kChromeUIExtensionsURL)));
 599     params.path_behavior = chrome::NavigateParams::IGNORE_AND_NAVIGATE;
 600
 601     GURL::Replacements replacements;
 602     std::string query =
 603         base::StringPrintf("options=%s", extension->id().c_str());
 604     replacements.SetQueryStr(query);
 605     params.url = params.url.ReplaceComponents(replacements);
 606
 607     chrome::ShowSingletonTabOverwritingNTP(browser, params);
 608   } else {
 609     // Otherwise open a new tab with the extension's options page
 610     content::OpenURLParams params(OptionsPageInfo::GetOptionsPage(extension),
 611                                   content::Referrer(),
 612                                   SINGLETON_TAB,
 613                                   ui::PAGE_TRANSITION_LINK,
 614                                   false);
 615     browser->OpenURL(params);
 616     browser->window()->Show();
 617     WebContents* web_contents =
 618         browser->tab_strip_model()->GetActiveWebContents();
 619     web_contents->GetDelegate()->ActivateContents(web_contents);
 620   }
 621
 622   return true;
 623 }
 624
 625 }  // namespace extensions