Fix window zoom in a sane way, remove nasty casts.

content/public/browser/web_contents.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/process_util.h"
@@ skipping 15 matching lines @@
 // WebContents.
 class TabContentsView;
 
 namespace base {
 class PropertyBag;
 class TimeTicks;
 }
 
 namespace gfx {
 class Rect;
+class Size;
 }
 
 namespace net {
 struct LoadStateWithParam;
 }
 
 namespace content {
 
 class BrowserContext;
 class NavigationController;
@@ skipping 275 matching lines @@
   // Opens view-source tab for this contents.
   virtual void ViewSource() = 0;
 
   virtual void ViewFrameSource(const GURL& url,
                                const std::string& content_state)= 0;
 
   // Gets the minimum/maximum zoom percent.
   virtual int GetMinimumZoomPercent() const = 0;
   virtual int GetMaximumZoomPercent() const = 0;
 
+  // Gets the preferred size of the contents.
+  virtual gfx::Size GetPreferredSize() const = 0;
+
   // Get the content restrictions (see content::ContentRestriction).
   virtual int GetContentRestrictions() const = 0;
 
   // Query the WebUIFactory for the TypeID for the current URL.
   virtual WebUI::TypeID GetWebUITypeForCurrentState() = 0;
 
   // Returns the WebUI for the current state of the tab. This will either be
   // the pending WebUI, the committed WebUI, or NULL.
   virtual WebUI* GetWebUIForCurrentState()= 0;
 
   // Called when the reponse to a pending mouse lock request has arrived.
   // Returns true if |allowed| is true and the mouse has been successfully
   // locked.
   virtual bool GotResponseToLockMouseRequest(bool allowed) = 0;
 
   // Returns true if the location bar should be focused by default rather than
   // the page contents. The view calls this function when the tab is focused
   // to see what it should do.
   virtual bool FocusLocationBarByDefault() = 0;
 
   // Focuses the location bar.
   virtual void SetFocusToLocationBar(bool select_all) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_