Disabled pinch zooming in non-browser Aura windows.

ui/keyboard/keyboard_controller_proxy.cc

 // Copyright (c) 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.
 
 #include "ui/keyboard/keyboard_controller_proxy.h"
 
 #include "base/values.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_view.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/common/bindings_policy.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/keyboard/keyboard_constants.h"
 
 namespace {
 
 // Converts ui::TextInputType to string.
 std::string TextInputTypeToString(ui::TextInputType type) {
   switch (type) {
     case ui::TEXT_INPUT_TYPE_NONE:
@@ skipping 62 matching lines @@
     keyboard->SetBounds(bounds);
     proxy_->set_resizing_from_contents(false);
   }
 
   // Overridden from content::WebContentsDelegate:
   virtual void RequestMediaAccessPermission(content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) OVERRIDE {
     proxy_->RequestAudioInput(web_contents, request, callback);
   }
+  virtual bool PreHandleGestureEvent(
+      content::WebContents* source,
+      const blink::WebGestureEvent& event) OVERRIDE {
+    // Disable pinch zooming.
+    return event.type == blink::WebGestureEvent::GesturePinchBegin ||
+        event.type == blink::WebGestureEvent::GesturePinchUpdate ||
+        event.type == blink::WebGestureEvent::GesturePinchEnd;
+  }
 
 
   // Overridden from content::WebContentsObserver:
   virtual void WebContentsDestroyed(content::WebContents* contents) OVERRIDE {
     delete this;
   }
 
   keyboard::KeyboardControllerProxy* proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardContentsDelegate);
@@ skipping 74 matching lines @@
     base::DictionaryValue input_context;
     input_context.SetString("type", TextInputTypeToString(type));
     webui->CallJavascriptFunction("OnTextInputBoxFocused", input_context);
   }
 }
 
 void KeyboardControllerProxy::SetupWebContents(content::WebContents* contents) {
 }
 
 }  // namespace keyboard