Fix WebView compositor input handling

android_webview/browser/in_process_renderer/in_process_renderer_client.cc

 // 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.
 
 #include "android_webview/browser/in_process_renderer/in_process_renderer_client.h"
 
 #include "android_webview/browser/in_process_renderer/in_process_view_renderer.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 
@@ skipping 11 matching lines @@
   }
 
   int id = it.GetCurrentValue()->GetID();
   it.Advance();
   DCHECK(it.IsAtEnd());  // Not multiprocess compatible.
   return id;
 }
 
 }
 
+InProcessRendererClient::InProcessRendererClient()
+    : input_event_handler_(NULL) {
+}
+
+InProcessRendererClient::~InProcessRendererClient() {
+}
+
 MessageLoop* InProcessRendererClient::OverrideCompositorMessageLoop() const {
  MessageLoop* rv = content::BrowserThread::UnsafeGetMessageLoopForThread(
       content::BrowserThread::UI);
   DCHECK(rv);
   return rv;
 }
 
 void InProcessRendererClient::DidCreateSynchronousCompositor(
     int render_view_id,
     content::SynchronousCompositor* compositor) {
   InProcessViewRenderer* view_renderer =
       InProcessViewRenderer::FromId(GetInProcessRendererId(), render_view_id);
-  if (view_renderer)
+  if (view_renderer) {
     view_renderer->BindSynchronousCompositor(compositor);
+    view_renderer->BindSynchronousInputEventHandler(input_event_handler_);
+  }
 }
 
-bool InProcessRendererClient::ShouldCreateCompositorInputHandler() const {
-  // Compositor input handling will be performed by the renderer host
-  // when UI and compositor threads are merged, so we disable client compositor
-  // input handling in this case.
-  return false;
+void InProcessRendererClient::DidCreateSynchronousInputEventHandler(
+    content::SynchronousInputEventHandler* input_event_handler) {
+  DCHECK(!input_event_handler_ || !input_event_handler);
+  input_event_handler_ = input_event_handler;
 }
 
 }  // namespace android_webview