Fixing opacity for browser frame window on ASH/Windows.

chrome/browser/ui/views/chrome_views_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_CHROME_VIEWS_DELEGATE_H_
 #define CHROME_BROWSER_UI_VIEWS_CHROME_VIEWS_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "build/build_config.h"
@@ skipping 24 matching lines @@
                                      bool has_submenu) OVERRIDE;
 
 #if defined(OS_WIN)
   virtual HICON GetDefaultWindowIcon() const OVERRIDE;
   virtual bool IsWindowInMetro(gfx::NativeWindow window) const OVERRIDE;
 #elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
   virtual gfx::ImageSkia* GetDefaultWindowIcon() const OVERRIDE;
 #endif
   virtual views::NonClientFrameView* CreateDefaultNonClientFrameView(
       views::Widget* widget) OVERRIDE;
-  virtual bool UseTransparentWindows() const OVERRIDE;
   virtual void AddRef() OVERRIDE;
   virtual void ReleaseRef() OVERRIDE;
   virtual content::WebContents* CreateWebContents(
       content::BrowserContext* browser_context,
       content::SiteInstance* site_instance) OVERRIDE;
   virtual void OnBeforeWidgetInit(
       views::Widget::InitParams* params,
       views::internal::NativeWidgetDelegate* delegate) OVERRIDE;
   virtual base::TimeDelta GetDefaultTextfieldObscuredRevealDuration() OVERRIDE;
 
  private:
+  // Function to retrieve default opacity value mainly based on platform
+  // and desktop context.
+  views::Widget::InitParams::WindowOpacity GetOpacityForInitParams(
+      const views::Widget::InitParams& params);
+
   DISALLOW_COPY_AND_ASSIGN(ChromeViewsDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_CHROME_VIEWS_DELEGATE_H_