cc: Correctly inherit clip parent's clip in target space

cc/trees/layer_tree_host_common_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_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
@@ skipping 9306 matching lines @@
                                gfx::PointF(), gfx::Size(30, 30), true, false,
                                true);
   SetLayerPropertiesForTesting(test_layer, identity_matrix, gfx::Point3F(),
                                gfx::PointF(), gfx::Size(30, 30), true, false,
                                false);
 
   ExecuteCalculateDrawProperties(root);
 
   EXPECT_TRUE(test_layer->is_clipped());
   EXPECT_FALSE(test_layer->render_target()->render_surface()->is_clipped());
-  EXPECT_EQ(gfx::Rect(-2, -2, 28, 28), test_layer->clip_rect());
-  EXPECT_EQ(gfx::Rect(26, 26), test_layer->drawable_content_rect());
+  EXPECT_EQ(gfx::Rect(-2, -2, 30, 30), test_layer->clip_rect());
+  EXPECT_EQ(gfx::Rect(28, 28), test_layer->drawable_content_rect());
 }
 
 TEST_F(LayerTreeHostCommonTest,
        RenderSurfaceWithUnclippedDescendantsButDoesntApplyOwnClip) {
   // Ensure that the visible layer rect of a descendant of a surface with
   // unclipped descendants is computed correctly, when the surface doesn't apply
   // a clip.
   LayerImpl* root = root_layer();
   LayerImpl* clip_parent = AddChildToRoot<LayerImpl>();
   LayerImpl* render_surface = AddChild<LayerImpl>(clip_parent);
@@ skipping 724 matching lines @@
   EXPECT_EQ(scroll_child6.id, grand_child10->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent3->scroll_tree_index());
   EXPECT_EQ(scroll_child7.id, child8->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent4->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, child9->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, grand_child12->scroll_tree_index());
 }
 
 }  // namespace
 }  // namespace cc