Route touch-events for WebViewGuest directly to guest renderer.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 0cc916feb9a4bdf0b6f543fdb2f7a70307874832..e3bad802d766a34a783052abcc242dc54f231c71 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -192,6 +192,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
                                      gfx::Point* transformed_point) override;
   void ProcessMouseEvent(const blink::WebMouseEvent& event) override;
   void ProcessMouseWheelEvent(const blink::WebMouseWheelEvent& event) override;
+  void ProcessTouchEvent(const blink::WebTouchEvent& event,
+                         const ui::LatencyInfo& latency) override;
 
 #if defined(OS_WIN)
   void SetParentNativeViewAccessible(
@@ -480,6 +482,9 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
                               bool mouse_locked,
                               bool selection_popup);
 
+  // Returns true when we can do SurfaceHitTesting for the event type.
+  bool ShouldRouteEvent(const ui::Event* event) const;
+
   // Called when the parent window bounds change.
   void HandleParentBoundsChanged();