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 55f5bd2c1eedd1eb93bc131ee3922160051fcd01..367a84758691e0c35123ee287630b2f8557b9e7c 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -390,10 +390,6 @@ 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());
@@ -407,6 +403,7 @@ 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();
 }