Switch Extensions::TabHelper to use WebContents, WebContentsUserData.

chrome/browser/extensions/script_badge_controller_unittest.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 <string>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
@@ skipping 25 matching lines @@
 
 class ScriptBadgeControllerTest : public TabContentsTestHarness {
  public:
   ScriptBadgeControllerTest()
       : ui_thread_(BrowserThread::UI, MessageLoop::current()),
         file_thread_(BrowserThread::FILE, MessageLoop::current()),
         current_channel_(chrome::VersionInfo::CHANNEL_DEV) {}
 
   virtual void SetUp() OVERRIDE {
     // Note that this sets a PageActionController into the
-    // extension_tab_helper()->location_bar_controller() field.  Do
+    // extensions::TabHelper's location_bar_controller field.  Do
     // not use that for testing.
     TabContentsTestHarness::SetUp();
 
     TestExtensionSystem* extension_system =
         static_cast<TestExtensionSystem*>(ExtensionSystem::Get(
             tab_contents()->profile()));
 
     // Create an ExtensionService so the ScriptBadgeController can find its
     // extensions.
     CommandLine command_line(CommandLine::NO_PROGRAM);
@@ skipping 183 matching lines @@
   // Getting attention a second time should have no effect.
   script_badge_controller_->GetAttentionFor(extension->id());
 
   EXPECT_THAT(script_badge_controller_->GetCurrentActions(),
               testing::ElementsAre(extension->script_badge()));
   EXPECT_EQ(0, subsequent_get_attention_call.events);
 };
 
 }  // namespace
 }  // namespace extensions