Linux Aura: Hide title bar when browser windows are maximized on Unity.

chrome/browser/ui/views/frame/opaque_browser_frame_view_linux.h

 // Copyright (c) 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 CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LINUX_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LINUX_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view_platform_specific.h"
 #include "ui/views/linux_ui/window_button_order_observer.h"
 
 // Plumbs button change events from views::LinuxUI to
 // OpaqueBrowserFrameViewLayout.
 class OpaqueBrowserFrameViewLinux
     : public OpaqueBrowserFrameViewPlatformSpecific,
       public views::WindowButtonOrderObserver {
  public:
   OpaqueBrowserFrameViewLinux(
       OpaqueBrowserFrameView* view,
       OpaqueBrowserFrameViewLayout* layout);
   virtual ~OpaqueBrowserFrameViewLinux();
 
   // Overridden from OpaqueBrowserFrameViewPlatformSpecific:
   virtual bool ShouldShowCaptionButtons() const OVERRIDE;
+  virtual bool ShouldShowTitleBar() const OVERRIDE;
 
   // Overridden from views::WindowButtonOrderObserver:
   virtual void OnWindowButtonOrderingChange(
       const std::vector<views::FrameButton>& leading_buttons,
       const std::vector<views::FrameButton>& trailing_buttons) OVERRIDE;
 
  private:
   OpaqueBrowserFrameView* view_;
   OpaqueBrowserFrameViewLayout* layout_;
 
   DISALLOW_COPY_AND_ASSIGN(OpaqueBrowserFrameViewLinux);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LINUX_H_