Disabled pinch zooming in non-browser Aura windows.

content/public/browser/web_contents_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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 37 matching lines @@
 struct SSLStatus;
 }
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
 
 namespace blink {
+class WebGestureEvent;
 class WebLayer;
 struct WebWindowFeatures;
 }
 
 namespace content {
 
 struct OpenURLParams;
 
 // Objects implement this interface to get notified about changes in the
 // WebContents and to provide necessary functionality.
@@ skipping 183 matching lines @@
   virtual void HandleKeyboardEvent(WebContents* source,
                                    const NativeWebKeyboardEvent& event) {}
 
   virtual void HandleMouseDown() {}
   virtual void HandleMouseUp() {}
 
   // Handles activation resulting from a pointer event (e.g. when mouse is
   // pressed, or a touch-gesture begins).
   virtual void HandlePointerActivate() {}
 
+  // Allows delegates to handle gesture events before sending to the renderer.
+  // Returns true if the |event| was handled and thus shouldn't be processed
+  // by the renderer's event handler. Note that the touch events that create
+  // the gesture are always passed to the renderer since the gesture is created
+  // and dispatched after the touches return without being "preventDefault()"ed.
+  virtual bool PreHandleGestureEvent(
+      WebContents* source,
+      const blink::WebGestureEvent& event);
+
   virtual void HandleGestureBegin() {}
   virtual void HandleGestureEnd() {}
 
   // Called when an external drag event enters the web contents window. Return
   // true to allow dragging and dropping on the web contents window or false to
   // cancel the operation. This method is used by Chromium Embedded Framework.
   virtual bool CanDragEnter(WebContents* source,
                             const DropData& data,
                             blink::WebDragOperationsMask operations_allowed);
 
@@ skipping 192 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_