Removes the dependency to WMTestHelper from app shell.

apps/shell/browser/shell_browser_main_parts.h

 // 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.
 
 #ifndef APPS_SHELL_BROWSER_SHELL_BROWSER_MAIN_PARTS_H_
 #define APPS_SHELL_BROWSER_SHELL_BROWSER_MAIN_PARTS_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 25 matching lines @@
 class ShellBrowserContext;
 class ShellBrowserMainDelegate;
 class ShellDesktopController;
 class ShellExtensionsClient;
 
 #if defined(OS_CHROMEOS)
 class ShellNetworkController;
 #endif
 
 // Handles initialization of AppShell.
-class ShellBrowserMainParts : public content::BrowserMainParts,
-                              public aura::WindowTreeHostObserver {
+class ShellBrowserMainParts : public content::BrowserMainParts {
  public:
   ShellBrowserMainParts(const content::MainFunctionParams& parameters,
                         ShellBrowserMainDelegate* browser_main_delegate);
   virtual ~ShellBrowserMainParts();
 
   ShellBrowserContext* browser_context() {
     return browser_context_.get();
   }
 
   extensions::ShellExtensionSystem* extension_system() {
     return extension_system_;
   }
 
   // BrowserMainParts overrides.
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PreMainMessageLoopStart() OVERRIDE;
   virtual void PostMainMessageLoopStart() OVERRIDE;
   virtual int PreCreateThreads() OVERRIDE;
   virtual void PreMainMessageLoopRun() OVERRIDE;
   virtual bool MainMessageLoopRun(int* result_code) OVERRIDE;
   virtual void PostMainMessageLoopRun() OVERRIDE;
   virtual void PostDestroyThreads() OVERRIDE;
 
-  // aura::WindowTreeHostObserver overrides:
-  virtual void OnHostCloseRequested(const aura::WindowTreeHost* host) OVERRIDE;
-
  private:
   // Creates and initializes the ExtensionSystem.
   void CreateExtensionSystem();
 
 #if defined(OS_CHROMEOS)
   scoped_ptr<ShellNetworkController> network_controller_;
 #endif
   scoped_ptr<ShellDesktopController> desktop_controller_;
   scoped_ptr<ShellBrowserContext> browser_context_;
   scoped_ptr<ShellExtensionsClient> extensions_client_;
@@ skipping 14 matching lines @@
   bool run_message_loop_;
 
   scoped_ptr<ShellBrowserMainDelegate> browser_main_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellBrowserMainParts);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_BROWSER_SHELL_BROWSER_MAIN_PARTS_H_