Implement active wheel fling transfer via WebCompositorInputHandlerClient

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 2052 matching lines @@
 
 void RenderViewImpl::requestPointerUnlock() {
   mouse_lock_dispatcher_->UnlockMouse(webwidget_mouse_lock_target_.get());
 }
 
 bool RenderViewImpl::isPointerLocked() {
   return mouse_lock_dispatcher_->IsMouseLockedTo(
       webwidget_mouse_lock_target_.get());
 }
 
+void RenderViewImpl::didActivateCompositor(int input_handler_identifier)
+{

[darin (slow to review), 2012/03/27 03:47:54]

nit: opening bracket on previous line

+  CompositorThread* compositor_thread =
+      RenderThreadImpl::current()->compositor_thread();
+  if (compositor_thread)
+    compositor_thread->AddInputHandler(
+        routing_id_, input_handler_identifier, AsWeakPtr());
+
+  RenderWidget::didActivateCompositor(input_handler_identifier);
+}
+
 // WebKit::WebFrameClient -----------------------------------------------------
 
 WebPlugin* RenderViewImpl::createPlugin(WebFrame* frame,
                                         const WebPluginParams& params) {
   // The browser plugin is a special kind of pepper plugin
   // that loads asynchronously. We first create a placeholder here.
   // When a guest is ready to be displayed, we swap out the placeholder
   // with the guest.
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableBrowserPlugin) &&
@@ skipping 3118 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this));
 #endif
 }