Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/api/system_indicator/system_indicator_apitest.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/api/system_indicator/system_indicator_manager.h"
 #include "chrome/browser/extensions/api/system_indicator/system_indicator_manager_factory.h"
 #include "chrome/browser/extensions/extension_action.h"
 #include "chrome/browser/extensions/extension_action_manager.h"
 #include "chrome/browser/extensions/extension_apitest.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/lazy_background_page_test_util.h"
 #include "chrome/browser/ui/browser.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/switches.h"
 
 class SystemIndicatorApiTest : public ExtensionApiTest {
  public:
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
     ExtensionApiTest::SetUpCommandLine(command_line);
     // Set shorter delays to prevent test timeouts in tests that need to wait
     // for the event page to unload.
@@ skipping 38 matching lines @@
 
     // Lazy Background Page has been shut down.
     extensions::ProcessManager* pm =
         extensions::ExtensionSystem::Get(profile())->process_manager();
     EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 
     EXPECT_TRUE(manager->SendClickEventToExtensionForTest(extension->id()));
     EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
   }
 }