Generalize layer mirroring for phantom windows

components/exo/surface_unittest.cc

 // Copyright 2015 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 "base/bind.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
@@ skipping 111 matching lines @@
   surface->SetBufferScale(kBufferScale);
   surface->Commit();
   EXPECT_EQ(
       gfx::ScaleToFlooredSize(buffer_size, 1.0f / kBufferScale).ToString(),
       surface->window()->bounds().size().ToString());
   EXPECT_EQ(
       gfx::ScaleToFlooredSize(buffer_size, 1.0f / kBufferScale).ToString(),
       surface->content_size().ToString());
 }
 
-TEST_F(SurfaceTest, RecreateLayer) {
+TEST_F(SurfaceTest, MirrorLayers) {
   gfx::Size buffer_size(512, 512);
   std::unique_ptr<Buffer> buffer(
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
   std::unique_ptr<Surface> surface(new Surface);
 
   surface->Attach(buffer.get());
   surface->Commit();
 
   EXPECT_EQ(buffer_size, surface->window()->bounds().size());
   EXPECT_EQ(buffer_size, surface->window()->layer()->bounds().size());
   std::unique_ptr<ui::LayerTreeOwner> old_layer_owner =
-      ::wm::RecreateLayers(surface->window(), nullptr);
+      ::wm::MirrorLayers(surface->window(), false /* sync_bounds */);
   EXPECT_EQ(buffer_size, surface->window()->bounds().size());
   EXPECT_EQ(buffer_size, surface->window()->layer()->bounds().size());
   EXPECT_EQ(buffer_size, old_layer_owner->root()->bounds().size());
   EXPECT_TRUE(surface->window()->layer()->has_external_content());
   EXPECT_TRUE(old_layer_owner->root()->has_external_content());
 }
 
 TEST_F(SurfaceTest, SetViewport) {
   gfx::Size buffer_size(1, 1);
   std::unique_ptr<Buffer> buffer(
@@ skipping 94 matching lines @@
 
 TEST_F(SurfaceTest, Commit) {
   std::unique_ptr<Surface> surface(new Surface);
 
   // Calling commit without a buffer should succeed.
   surface->Commit();
 }
 
 }  // namespace
 }  // namespace exo