Refactor extension handling code from AppShimHost into ExtensionAppShimHandler.

chrome/browser/ui/app_list/app_list_service_mac_browsertest.mm

 // Copyright 2013 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 "apps/app_shim/app_shim_handler_mac.h"
 #include "base/command_line.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/mac/app_mode_common.h"
@@ skipping 22 matching lines @@
     DCHECK(running_);
     AppShimHandler::GetForAppMode(app_mode::kAppListModeId)->OnShimFocus(this);
   }
 
   void QuitShim() {
     DCHECK(running_);
     running_ = false;
     AppShimHandler::GetForAppMode(app_mode::kAppListModeId)->OnShimClose(this);
   }
 
-  // AppShimHandler::Host override:
+  // AppShimHandler::Host overrides:
   virtual void OnAppClosed() OVERRIDE {
     ++close_count_;
     QuitShim();
   }
+  virtual Profile* GetProfile() const OVERRIDE {
+    return NULL;  // Currently unused in this test.
+  }
+  virtual std::string GetAppId() const OVERRIDE {
+    return app_mode::kAppListModeId;
+  }
 
   int close_count_;
   bool running_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppListServiceMacBrowserTest);
 };
 
 }  // namespace
 
@@ skipping 41 matching lines @@
   EXPECT_EQ(2, close_count_);
 
   // Verify that observers are correctly removed by ensuring that |close_count_|
   // is unchanged when the app list is dismissed again.
   service->ShowAppList(browser()->profile());
   EXPECT_TRUE(service->IsAppListVisible());
   service->DismissAppList();
   EXPECT_FALSE(service->IsAppListVisible());
   EXPECT_EQ(2, close_count_);
 }