cc: Add id->LayerImpl map to LayerTreeImpl

cc/render_surface_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/render_surface_impl.h"
 
 #include "cc/append_quads_data.h"
 #include "cc/layer_impl.h"
 #include "cc/render_pass_sink.h"
 #include "cc/scoped_ptr_vector.h"
@@ skipping 41 matching lines @@
     EXECUTE_AND_VERIFY_SURFACE_CHANGED(renderSurface->setContentRect(testRect));
 
     owningLayer->setOpacity(0.5f);
     EXPECT_TRUE(renderSurface->surfacePropertyChanged());
     owningLayer->resetAllChangeTrackingForSubtree();
 
     // Setting the surface properties to the same values again should not be considered "change".
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setClipRect(testRect));
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setContentRect(testRect));
 
-    scoped_ptr<LayerImpl> dummyMask = LayerImpl::create(hostImpl.activeTree(), 1);
+    scoped_ptr<LayerImpl> dummyMask = LayerImpl::create(hostImpl.activeTree(), 2);
     gfx::Transform dummyMatrix;
     dummyMatrix.Translate(1.0, 2.0);
 
     // The rest of the surface properties are either internal and should not cause change,
     // or they are already accounted for by the owninglayer->layerPropertyChanged().
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setDrawOpacity(0.5));
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setDrawTransform(dummyMatrix));
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->setReplicaDrawTransform(dummyMatrix));
     EXECUTE_AND_VERIFY_SURFACE_DID_NOT_CHANGE(renderSurface->clearLayerLists());
 }
@@ skipping 78 matching lines @@
     ASSERT_EQ(1u, passSink.renderPasses().size());
     RenderPass* pass = passSink.renderPasses()[0];
 
     EXPECT_EQ(RenderPass::Id(2, 0), pass->id);
     EXPECT_RECT_EQ(contentRect, pass->output_rect);
     EXPECT_EQ(origin, pass->transform_to_root_target);
 }
 
 }  // namespace
 }  // namespace cc