Move compositor thread input handling logic into content

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 708318756cfd4c9ee5694ae3748f6305ad1aaf53..8e51cba868eb269257c48b88b5a5e44081121134 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -475,10 +475,6 @@ scoped_ptr<OutputSurface> LayerTreeHost::CreateOutputSurface() {
   return client_->CreateOutputSurface();
 }
 
-scoped_ptr<InputHandlerClient> LayerTreeHost::CreateInputHandlerClient() {
-  return client_->CreateInputHandlerClient();
-}
-
 scoped_ptr<LayerTreeHostImpl> LayerTreeHost::CreateLayerTreeHostImpl(
     LayerTreeHostImplClient* client) {
   DCHECK(proxy_->IsImplThread());
@@ -492,6 +488,7 @@ scoped_ptr<LayerTreeHostImpl> LayerTreeHost::CreateLayerTreeHostImpl(
     top_controls_manager_weak_ptr_ =
         host_impl->top_controls_manager()->AsWeakPtr();
   }
+  input_handler_weak_ptr_ = host_impl->AsWeakPtr();
   return host_impl.Pass();
 }