Disabled pinch zooming in non-browser Aura windows.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index 3f9e71d5b1f9a41ccd5dbeebaa2dc16f1d66b1c4..69980af03c1586f4056f9e3e4589c676f1ff8fa0 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -57,6 +57,7 @@ class Size;
 namespace blink {
 class WebLayer;
 struct WebWindowFeatures;
+class WebGestureEvent;

[jam, 2014/01/23 01:34:47]

nit: class then struct

 }
 
 namespace content {
@@ -266,6 +267,12 @@ class CONTENT_EXPORT WebContentsDelegate {
   // 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.
+  virtual bool PreHandleGestureEvent(
+      WebContents* source,
+      const blink::WebGestureEvent& event);
+
   virtual void HandleGestureBegin() {}
   virtual void HandleGestureEnd() {}