Refactor implementation of BrowserActions, and add support for

chrome/browser/tab_contents/tab_contents.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/tab_contents/tab_contents.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_version_info.h"
 #include "base/process_util.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/time.h"
 #include "chrome/browser/blocked_popup_container.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/cert_store.h"
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/dom_operation_notification_details.h"
 #include "chrome/browser/dom_ui/dom_ui.h"
 #include "chrome/browser/dom_ui/dom_ui_factory.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/download/download_request_manager.h"
 #include "chrome/browser/external_protocol_handler.h"
+#include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/favicon_service.h"
 #include "chrome/browser/form_field_history_manager.h"
 #include "chrome/browser/gears_integration.h"
 #include "chrome/browser/google_util.h"
 #include "chrome/browser/hung_renderer_dialog.h"
 #include "chrome/browser/jsmessage_box_handler.h"
 #include "chrome/browser/load_from_memory_cache_details.h"
 #include "chrome/browser/load_notification_details.h"
 #include "chrome/browser/metrics/metric_event_duration_details.h"
 #include "chrome/browser/modal_html_dialog_delegate.h"
@@ skipping 1366 matching lines @@
   // the commit.
   GenerateKeywordIfNecessary(params);
 
   // Allow the new page to set the title again.
   received_page_title_ = false;
 
   // Get the favicon, either from history or request it from the net.
   fav_icon_helper_.FetchFavIcon(details.entry->url());
 
   // Disable all page actions, unless this is an in-page navigation.
-  if (!page_actions_.empty()) {
-    url_canon::Replacements<char> replacements;
-    replacements.ClearRef();
-    if (params.url.ReplaceComponents(replacements) !=
-        params.referrer.ReplaceComponents(replacements)) {
+  url_canon::Replacements<char> replacements;
+  replacements.ClearRef();
+  if (params.url.ReplaceComponents(replacements) !=
+      params.referrer.ReplaceComponents(replacements)) {
+    if (!page_actions_.empty())
       page_actions_.clear();
+
+    ExtensionsService* service = profile()->GetExtensionsService();
+    if (service) {
+      for (size_t i = 0; i < service->extensions()->size(); ++i) {
+        ExtensionAction2* action =
+            service->extensions()->at(i)->browser_action();
+        if (!action)
+          continue;
+
+        action->ClearAllValuesForTab(controller().session_id().id());
+        NotificationService::current()->Notify(
+            NotificationType::EXTENSION_BROWSER_ACTION_UPDATED,
+            Source<ExtensionAction2>(action),
+            NotificationService::NoDetails());
+      }
     }
   }
 
   // Close constrained popups if necessary.
   MaybeCloseChildWindows(details.previous_url, details.entry->url());
 
   // Update the starred state.
   UpdateStarredStateForCurrentURL();
 }
 
@@ skipping 1201 matching lines @@
 #endif
 
     default:
       NOTREACHED();
   }
 }
 
 void TabContents::set_encoding(const std::string& encoding) {
   encoding_ = CharacterEncoding::GetCanonicalEncodingNameByAliasName(encoding);
 }