Support GestureBegin and GestureEnd in ui::GestureProvider

content/browser/android/content_view_core_impl.cc

 // Copyright 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.
 
 #include "content/browser/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 351 matching lines @@
     }
   }
 }
 
 void ContentViewCoreImpl::RenderViewReady() {
   if (device_orientation_ != 0)
     SendOrientationChangeEventInternal();
 }
 
 void ContentViewCoreImpl::OnGestureEvent(const ui::GestureEventData& gesture) {
-  SendGestureEvent(
-      CreateWebGestureEventFromGestureEventData(gesture, 1.f / dpi_scale()));
+  WebGestureEvent event =
+      CreateWebGestureEventFromGestureEventData(gesture, 1.f / dpi_scale());
+  DCHECK_NE(event.type, WebInputEvent::Undefined)

[jdduke (slow), 2014/04/03 22:03:28]

Hmm, I think your change to CreateWebGestureEventFromGestureEventData should be
sufficient here, you can just change this back to how it was.

[tdresser, 2014/04/04 16:39:31]

Done.

 }
 
 RenderWidgetHostViewAndroid*
     ContentViewCoreImpl::GetRenderWidgetHostViewAndroid() {
   RenderWidgetHostView* rwhv = NULL;
   if (web_contents_) {
     rwhv = web_contents_->GetRenderWidgetHostView();
     if (web_contents_->ShowingInterstitialPage()) {
       rwhv = static_cast<InterstitialPageImpl*>(
           web_contents_->GetInterstitialPage())->
@@ skipping 1411 matching lines @@
       reinterpret_cast<ui::ViewAndroid*>(view_android),
       reinterpret_cast<ui::WindowAndroid*>(window_android));
   return reinterpret_cast<intptr_t>(view);
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content