Add EventForwarder for routing touch events

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 48ca4f7da8d4f4e908d64c84fea85bd2d04a36dc..ab9ba5a682fc5843df925a8554a24284c22026ec 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -137,6 +137,7 @@
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/accessibility/ax_tree_combiner.h"
+#include "ui/android/event_handler.h"
 #include "ui/base/layout.h"
 #include "ui/events/blink/web_input_event_traits.h"
 #include "ui/gl/gl_switches.h"
@@ -5309,6 +5310,11 @@ void WebContentsImpl::SetHasPersistentVideo(bool value) {
 }
 
 #if defined(OS_ANDROID)
+base::android::ScopedJavaLocalRef<jobject>
+WebContentsImpl::CreateJavaEventHandlerFromNative() {
+  return GetNativeView()->CreateEventHandler()->CreateJavaObject();
+}
+
 void WebContentsImpl::NotifyFindMatchRectsReply(
     int version,
     const std::vector<gfx::RectF>& rects,