Revert of Encapsulate CSS selector declarative content condition tracking

chrome/browser/extensions/tab_helper.cc

 // Copyright (c) 2012 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/extensions/tab_helper.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 245 matching lines @@
   IPC_BEGIN_MESSAGE_MAP(TabHelper, message)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_DidGetWebApplicationInfo,
                         OnDidGetWebApplicationInfo)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_InlineWebstoreInstall,
                         OnInlineWebstoreInstall)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_GetAppInstallState,
                         OnGetAppInstallState);
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_ContentScriptsExecuting,
                         OnContentScriptsExecuting)
+    IPC_MESSAGE_HANDLER(ExtensionHostMsg_OnWatchedPageChange,
+                        OnWatchedPageChange)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 bool TabHelper::OnMessageReceived(const IPC::Message& message,
                                   content::RenderFrameHost* render_frame_host) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(TabHelper, message)
     IPC_MESSAGE_HANDLER(ExtensionHostMsg_DetailedConsoleMessageAdded,
@@ skipping 147 matching lines @@
 
 void TabHelper::OnContentScriptsExecuting(
     const ScriptExecutionObserver::ExecutingScriptsMap& executing_scripts_map,
     const GURL& on_url) {
   FOR_EACH_OBSERVER(
       ScriptExecutionObserver,
       script_execution_observers_,
       OnScriptsExecuted(web_contents(), executing_scripts_map, on_url));
 }
 
+void TabHelper::OnWatchedPageChange(
+    const std::vector<std::string>& css_selectors) {
+  if (ExtensionSystem::Get(profile_)->extension_service() &&
+      RulesRegistryService::Get(profile_)) {
+    RulesRegistryService::Get(profile_)->content_rules_registry()->Apply(
+        web_contents(), css_selectors);
+  }
+}
+
 void TabHelper::OnDetailedConsoleMessageAdded(
     const base::string16& message,
     const base::string16& source,
     const StackTrace& stack_trace,
     int32 severity_level) {
   if (IsSourceFromAnExtension(source)) {
     content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
     ErrorConsole::Get(profile_)->ReportError(
         scoped_ptr<ExtensionError>(new RuntimeError(
             extension_app_ ? extension_app_->id() : std::string(),
@@ skipping 140 matching lines @@
   }
 }
 
 void TabHelper::SetTabId(RenderViewHost* render_view_host) {
   render_view_host->Send(
       new ExtensionMsg_SetTabId(render_view_host->GetRoutingID(),
                                 SessionTabHelper::IdForTab(web_contents())));
 }
 
 }  // namespace extensions