cc : Fix axis alignment tracking bug in property tree building

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 <memory>
@@ skipping 1299 matching lines @@
     EXPECT_TRANSFORMATION_MATRIX_EQ(
         compositeSquared, child->draw_properties().target_space_transform);
     EXPECT_TRANSFORMATION_MATRIX_EQ(gfx::Transform(),
                                     GetRenderSurface(root)->draw_transform());
     EXPECT_TRANSFORMATION_MATRIX_EQ(compositeSquared,
                                     child->ScreenSpaceTransform());
     EXPECT_EQ(gfx::Rect(254, 316, 428, 428), child->clip_rect());
   }
 }
 
+TEST_F(LayerTreeHostCommonTest, RenderSurfaceForNonAxisAlignedClipping) {
+  LayerImpl* root = root_layer_for_testing();
+  LayerImpl* rotated_and_transparent = AddChildToRoot<LayerImpl>();
+  LayerImpl* clips_subtree = AddChild<LayerImpl>(rotated_and_transparent);
+  LayerImpl* draws_content = AddChild<LayerImpl>(clips_subtree);
+
+  root->SetBounds(gfx::Size(10, 10));
+  rotated_and_transparent->SetBounds(gfx::Size(10, 10));
+  rotated_and_transparent->test_properties()->opacity = 0.5f;
+  gfx::Transform rotate;
+  rotate.Rotate(2);
+  rotated_and_transparent->test_properties()->transform = rotate;
+  clips_subtree->SetBounds(gfx::Size(10, 10));
+  clips_subtree->SetMasksToBounds(true);
+  draws_content->SetBounds(gfx::Size(10, 10));
+  draws_content->SetDrawsContent(true);
+
+  ExecuteCalculateDrawProperties(root);
+  EffectTree& effect_tree =
+      root->layer_tree_impl()->property_trees()->effect_tree;
+  EffectNode* node = effect_tree.Node(clips_subtree->effect_tree_index());
+  EXPECT_TRUE(node->has_render_surface);
+}
+
 TEST_F(LayerTreeHostCommonTest,
        RenderSurfaceListForRenderSurfaceWithClippedLayer) {
   LayerImpl* root = root_layer_for_testing();
   LayerImpl* render_surface1 = AddChildToRoot<LayerImpl>();
   LayerImpl* child = AddChild<LayerImpl>(render_surface1);
 
   root->SetBounds(gfx::Size(10, 10));
   root->SetMasksToBounds(true);
   render_surface1->SetBounds(gfx::Size(10, 10));
   render_surface1->test_properties()->force_render_surface = true;
@@ skipping 8794 matching lines @@
 
   // Check child layer draw properties.
   EXPECT_EQ(gfx::Rect(10, 10), child->visible_layer_rect());
   EXPECT_EQ(gfx::Transform(), child->DrawTransform());
   EXPECT_EQ(gfx::Rect(10, 10), child->clip_rect());
   EXPECT_EQ(gfx::Rect(10, 10), child->drawable_content_rect());
 }
 
 }  // namespace
 }  // namespace cc