Move virtual setSurfaceReady to non-virtual StartCompositor.

content/test/web_layer_tree_view_impl_for_testing.cc

 // Copyright 2013 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/test/web_layer_tree_view_impl_for_testing.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/switches.h"
@@ skipping 36 matching lines @@
       this,
       this,
       nullptr,
       nullptr,
       settings,
       base::MessageLoopProxy::current(),
       nullptr);
   DCHECK(layer_tree_host_);
 }
 
-void WebLayerTreeViewImplForTesting::setSurfaceReady() {
-  layer_tree_host_->SetLayerTreeHostClientReady();
-}
-
 void WebLayerTreeViewImplForTesting::setRootLayer(
     const blink::WebLayer& root) {
   layer_tree_host_->SetRootLayer(
       static_cast<const cc_blink::WebLayerImpl*>(&root)->layer());
 }
 
 void WebLayerTreeViewImplForTesting::clearRootLayer() {
   layer_tree_host_->SetRootLayer(scoped_refptr<cc::Layer>());
 }
 
@@ skipping 129 matching lines @@
 
 void WebLayerTreeViewImplForTesting::registerSelection(
     const blink::WebSelectionBound& start,
     const blink::WebSelectionBound& end) {
 }
 
 void WebLayerTreeViewImplForTesting::clearSelection() {
 }
 
 }  // namespace content