Disabled pinch zooming in non-browser Aura windows.

chrome/browser/devtools/devtools_window.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_DEVTOOLS_DEVTOOLS_WINDOW_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 270 matching lines @@
   virtual content::JavaScriptDialogManager*
       GetJavaScriptDialogManager() OVERRIDE;
   virtual content::ColorChooser* OpenColorChooser(
       content::WebContents* web_contents,
       SkColor color,
       const std::vector<content::ColorSuggestion>& suggestions) OVERRIDE;
   virtual void RunFileChooser(
       content::WebContents* web_contents,
       const content::FileChooserParams& params) OVERRIDE;
   virtual void WebContentsFocused(content::WebContents* contents) OVERRIDE;
+  virtual bool PreHandleGestureEvent(
+      content::WebContents* source,
+      const blink::WebGestureEvent& event) OVERRIDE;
 
   // content::DevToolsFrontendHostDelegate override:
   virtual void DispatchOnEmbedder(const std::string& message) OVERRIDE;
 
   // DevToolsEmbedderMessageDispatcher::Delegate overrides:
   virtual void ActivateWindow() OVERRIDE;
   virtual void ActivateContents(content::WebContents* contents) OVERRIDE;
   virtual void CloseWindow() OVERRIDE;
   virtual void SetContentsInsets(
       int left, int top, int right, int bottom) OVERRIDE;
@@ skipping 81 matching lines @@
   // True if we're in the process of handling a beforeunload event originating
   // from the inspected webcontents, see InterceptPageBeforeUnload for details.
   bool intercepted_page_beforeunload_;
 
   scoped_ptr<DevToolsEmbedderMessageDispatcher> embedder_message_dispatcher_;
   base::WeakPtrFactory<DevToolsWindow> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_WINDOW_H_