Reset gesture detection upon page navigation for Aura

content/public/browser/render_widget_host_view.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_RENDER_WIDGET_HOST_VIEW_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
@@ skipping 120 matching lines @@
   // Begin subscribing for presentation events and captured frames.
   // |subscriber| is now owned by this object, it will be called only on the
   // UI thread.
   virtual void BeginFrameSubscription(
       scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) = 0;
 
   // End subscribing for frame presentation events. FrameSubscriber will be
   // deleted after this call.
   virtual void EndFrameSubscription() = 0;
 
+  // Cancel all the active touch events for the current window, only for Aura.

[tdresser, 2015/01/24 14:29:01]

We shouldn't reference Aura here, and this shouldn't be called
ResetGestureDetection, as it doesn't always reset gesture detection.

[jdduke (slow), 2015/01/26 16:09:00]

Would it be crazy to make this callback more generic, e.g.,
"OnMainFrameNavigation" or something like that?

[lanwei, 2015/01/30 14:21:50]

Done.

[lanwei, 2015/01/30 14:21:50]

Done.

+  virtual void ResetGestureDetection() = 0;
+
 #if defined(OS_MACOSX)
   // Set the view's active state (i.e., tint state of controls).
   virtual void SetActive(bool active) = 0;
 
   // Notifies the view that its enclosing window has changed visibility
   // (minimized/unminimized, app hidden/unhidden, etc).
   // TODO(stuartmorgan): This is a temporary plugin-specific workaround for
   // <http://crbug.com/34266>. Once that is fixed, this (and the corresponding
   // message and renderer-side handling) can be removed in favor of using
   // WasHidden/WasShown.
@@ skipping 12 matching lines @@
   // Returns |true| if text is currently being spoken by Mac OS X.
   virtual bool IsSpeaking() const = 0;
   // Stops speaking, if it is currently in progress.
   virtual void StopSpeaking() = 0;
 #endif  // defined(OS_MACOSX)
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_