cc: Remove EnsureRenderSurfaceLayerList, do UpdateDrawProps when needed.

cc/trees/layer_tree_host_impl_unittest.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host_impl.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 520 matching lines @@
       context_owned.Pass()));
 
   // Initialization will fail.
   EXPECT_FALSE(CreateHostImpl(DefaultSettings(),
                               output_surface.PassAs<OutputSurface>()));
 
   SetupScrollAndContentsLayers(gfx::Size(100, 100));
 
   // We should not crash when trying to scroll after the renderer initialization
   // fails.
-  EXPECT_EQ(InputHandler::ScrollIgnored,
+  EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Wheel));
 }
 
 TEST_F(LayerTreeHostImplTest, ReplaceTreeWhileScrolling) {
   LayerImpl* scroll_layer = SetupScrollAndContentsLayers(gfx::Size(100, 100));
   host_impl_->SetViewportSize(gfx::Size(50, 50));
   DrawFrame();
 
   // We should not crash if the tree is replaced while we are scrolling.
   EXPECT_EQ(InputHandler::ScrollStarted,
@@ skipping 6015 matching lines @@
   FakePictureLayerImpl* active_mask_content =
       static_cast<FakePictureLayerImpl*>(
           host_impl_->active_tree()->root_layer()->children()[0]->mask_layer());
   gfx::Rect r2 = active_mask_content->visible_rect_for_tile_priority();
 
   ASSERT_TRUE(!r2.IsEmpty());
 }
 
 }  // namespace
 }  // namespace cc