Fix WebView compositor input handling

content/public/browser/android/content_view_core.h

Index: content/public/browser/android/content_view_core.h
diff --git a/content/public/browser/android/content_view_core.h b/content/public/browser/android/content_view_core.h
index 1797a04cd12909d012213892a3af8394b54e1a00..e43153fa6fb36dc1e40aee8ebd6baa40a3f251c3 100644
--- a/content/public/browser/android/content_view_core.h
+++ b/content/public/browser/android/content_view_core.h
@@ -11,6 +11,7 @@
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
+#include "content/public/common/input_event_ack_state.h"
 
 namespace cc {
 class Layer;
@@ -28,6 +29,10 @@ class ViewAndroid;
 class WindowAndroid;
 }
 
+namespace WebKit {
+class WebInputEvent;
+}
+
 namespace content {
 class WebContents;
 
@@ -55,6 +60,12 @@ class CONTENT_EXPORT ContentViewCore {
   virtual void RequestContentClipping(const gfx::Rect& clipping,
                                       const gfx::Size& content_size) = 0;
 
+  typedef base::Callback<InputEventAckState(
+      int routing_id,
+      const WebKit::WebInputEvent& input_event)> InputEventFilterCallback;
+  virtual void SetInputEventFilterCallback(
+      const InputEventFilterCallback& callback) = 0;
+
   // Observer callback for frame metadata updates.
   typedef base::Callback<void(
       const gfx::SizeF& content_size,