Add extension API to change window show state using chrome.windows.update().

chrome/browser/ui/browser_window.h

 // Copyright (c) 2011 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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #pragma once
 
 #include "chrome/browser/ui/bookmarks/bookmark_bar.h"
 #include "chrome/browser/ui/fullscreen_exit_bubble_type.h"
@@ skipping 115 matching lines @@
   // and minimized windows.
   virtual gfx::Rect GetBounds() const = 0;
 
   // TODO(beng): REMOVE?
   // Returns true if the frame is maximized (aka zoomed).
   virtual bool IsMaximized() const = 0;
 
   // Returns true if the frame is minimized.
   virtual bool IsMinimized() const = 0;
 
+  // Maximizes/minimizes/restores the window.
+  virtual void Maximize() = 0;
+  virtual void Minimize() = 0;
+  virtual void Restore() = 0;
+
   // Accessors for fullscreen mode state.
   virtual void EnterFullscreen(const GURL& url,
                                FullscreenExitBubbleType bubble_type) = 0;
   virtual void ExitFullscreen() = 0;
   virtual void UpdateFullscreenExitBubbleContent(
       const GURL& url,
       FullscreenExitBubbleType bubble_type) = 0;
   virtual bool IsFullscreen() const = 0;
 
   // Returns true if the fullscreen bubble is visible.
@@ skipping 243 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_