Move SessionID, CaptureVisibleTabFunction to WebContents.

chrome/browser/extensions/page_action_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 "chrome/browser/extensions/extension_service.h"
@@ skipping 26 matching lines @@
     CommandLine command_line(CommandLine::NO_PROGRAM);
     extension_service_ =
         static_cast<TestExtensionSystem*>(
             ExtensionSystem::Get(tab_contents()->profile()))->
         CreateExtensionService(
             &command_line, FilePath(), false);
   }
 
  protected:
   int tab_id() {
-    return SessionID::IdForTab(tab_contents());
+    return SessionID::IdForTab(web_contents());
   }
 
   ExtensionService* extension_service_;
 
  private:
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
 };
 
 TEST_F(PageActionControllerTest, NavigationClearsState) {
@@ skipping 29 matching lines @@
 
   // Should discard the settings, and go back to the defaults.
   NavigateAndCommit(GURL("http://www.yahoo.com"));
 
   EXPECT_EQ("Hello", extension->page_action()->GetTitle(tab_id()));
   EXPECT_EQ(GURL(), extension->page_action()->GetPopupUrl(tab_id()));
 };
 
 }  // namespace
 }  // namespace extensions