Fix the white flicker of the keyboard overlay when it first appearing.

chrome/browser/ui/views/keyboard_overlay_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_KEYBOARD_OVERLAY_DELEGATE_H_
 #define CHROME_BROWSER_UI_VIEWS_KEYBOARD_OVERLAY_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 
 class WebDialogView;
 
 class KeyboardOverlayDelegate : public ui::WebDialogDelegate {
  public:
   explicit KeyboardOverlayDelegate(const string16& title);
 
-  WebDialogView* view() { return view_; }
-  void set_view(WebDialogView* view) { view_ = view; }
+  void Show(WebDialogView* view);
 
   // Overridden from ui::WebDialogDelegate:
   virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
 
  private:
   virtual ~KeyboardOverlayDelegate();
 
   // Overridden from ui::WebDialogDelegate:
   virtual ui::ModalType GetDialogModalType() const OVERRIDE;
   virtual string16 GetDialogTitle() const OVERRIDE;
@@ skipping 12 matching lines @@
   string16 title_;
 
   // The view associated with this delegate.
   // This class does not own the pointer.
   WebDialogView* view_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardOverlayDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_KEYBOARD_OVERLAY_DELEGATE_H_