Disabled pinch zooming in non-browser Aura windows.

chrome/browser/chromeos/first_run/first_run_view.h

 // Copyright 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_CHROMEOS_FIRST_RUN_FIRST_RUN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_FIRST_RUN_FIRST_RUN_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/web_contents_delegate.h"
@@ skipping 24 matching lines @@
   // Overriden from views::View.
   virtual void Layout() OVERRIDE;
   virtual void RequestFocus() OVERRIDE;
 
   content::WebContents* GetWebContents();
 
  private:
   // Overriden from content::WebContentsDelegate.
   virtual bool HandleContextMenu(
       const content::ContextMenuParams& params) OVERRIDE;
+  virtual bool PreHandleGestureEvent(
+      content::WebContents* source,
+      const blink::WebGestureEvent& event) OVERRIDE;
 
   views::WebView* web_view_;
 
   DISALLOW_COPY_AND_ASSIGN(FirstRunView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FIRST_RUN_FIRST_RUN_VIEW_H_