cc: Stop passing the occlusion explicitly to AppendQuads.

cc/layers/scrollbar_layer_unittest.cc

 // Copyright 2012 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/containers/hash_tables.h"
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/layers/painted_scrollbar_layer.h"
 #include "cc/layers/painted_scrollbar_layer_impl.h"
 #include "cc/layers/scrollbar_layer_interface.h"
@@ skipping 384 matching lines @@
           layer_impl_tree_root->children()[1]);
   scrollbar_layer_impl->SetBounds(gfx::Size(kTrackLength, kThumbThickness));
   scrollbar_layer_impl->SetCurrentPos(10.f);
   scrollbar_layer_impl->SetMaximum(100);
   scrollbar_layer_impl->SetVisibleToTotalLengthRatio(0.4f);
 
   // Thickness should be overridden to 3.
   {
     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
     AppendQuadsData data;
-    scrollbar_layer_impl->AppendQuads(render_pass.get(), Occlusion(), &data);
+    scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
 
     const QuadList& quads = render_pass->quad_list;
     ASSERT_EQ(1u, quads.size());
     EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
     EXPECT_EQ(gfx::Rect(6, 0, 39, 3), quads.front()->rect);
   }
 
   // Contents scale should scale the draw quad.
   scrollbar_layer_impl->draw_properties().contents_scale_x = 2.f;
   scrollbar_layer_impl->draw_properties().contents_scale_y = 2.f;
   {
     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
     AppendQuadsData data;
-    scrollbar_layer_impl->AppendQuads(render_pass.get(), Occlusion(), &data);
+    scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
 
     const QuadList& quads = render_pass->quad_list;
     ASSERT_EQ(1u, quads.size());
     EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
     EXPECT_EQ(gfx::Rect(12, 0, 78, 6), quads.front()->rect);
   }
   scrollbar_layer_impl->draw_properties().contents_scale_x = 1.f;
   scrollbar_layer_impl->draw_properties().contents_scale_y = 1.f;
 
   // For solid color scrollbars, position and size should reflect the
   // current viewport state.
   scrollbar_layer_impl->SetVisibleToTotalLengthRatio(0.2f);
   {
     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
     AppendQuadsData data;
-    scrollbar_layer_impl->AppendQuads(render_pass.get(), Occlusion(), &data);
+    scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
 
     const QuadList& quads = render_pass->quad_list;
     ASSERT_EQ(1u, quads.size());
     EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
     EXPECT_EQ(gfx::Rect(8, 0, 19, 3), quads.front()->rect);
   }
 
   // We shouldn't attempt div-by-zero when the maximum is zero.
   scrollbar_layer_impl->SetCurrentPos(0.f);
   scrollbar_layer_impl->SetMaximum(0);
   {
     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
     AppendQuadsData data;
-    scrollbar_layer_impl->AppendQuads(render_pass.get(), Occlusion(), &data);
+    scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
 
     const QuadList& quads = render_pass->quad_list;
     ASSERT_EQ(1u, quads.size());
     EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
     EXPECT_EQ(gfx::Rect(1, 0, 19, 3), quads.front()->rect);
   }
 }
 
 TEST_F(ScrollbarLayerTest, LayerDrivenSolidColorDrawQuads) {
   const int kThumbThickness = 3;
@@ skipping 34 matching lines @@
   scroll_layer_impl->ScrollBy(gfx::Vector2dF(4.f, 0.f));
 
   scrollbar_layer_impl->SetBounds(gfx::Size(kTrackLength, kThumbThickness));
   scrollbar_layer_impl->SetCurrentPos(4.f);
   scrollbar_layer_impl->SetMaximum(8);
 
   {
     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 
     AppendQuadsData data;
-    scrollbar_layer_impl->AppendQuads(render_pass.get(), Occlusion(), &data);
+    scrollbar_layer_impl->AppendQuads(render_pass.get(), &data);
 
     const QuadList& quads = render_pass->quad_list;
     ASSERT_EQ(1u, quads.size());
     EXPECT_EQ(DrawQuad::SOLID_COLOR, quads.front()->material);
     EXPECT_EQ(gfx::Rect(3, 0, 3, 3), quads.front()->rect);
   }
 }
 
 class ScrollbarLayerSolidColorThumbTest : public testing::Test {
  public:
@@ skipping 540 matching lines @@
   TestScale(gfx::Rect(1240, 0, 15, 1333), 2.7754839f);
   TestScale(gfx::Rect(1240, 0, 15, 677), 2.46677136f);
 
   // Horizontal Scrollbars.
   TestScale(gfx::Rect(0, 1240, 1333, 15), 2.7754839f);
   TestScale(gfx::Rect(0, 1240, 677, 15), 2.46677136f);
 }
 
 }  // namespace
 }  // namespace cc