cc: Add software renderer pixel tests

cc/test/pixel_test.h

 // Copyright 2013 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/file_util.h"
 #include "cc/quads/render_pass.h"
 #include "cc/test/pixel_comparator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/size.h"
 
 #ifndef CC_TEST_PIXEL_TEST_H_
 #define CC_TEST_PIXEL_TEST_H_
 
 namespace cc {
+class DirectRenderer;
 class GLRenderer;
+class SoftwareRenderer;
 class OutputSurface;
 class ResourceProvider;
 
 class PixelTest : public testing::Test {
  protected:
   PixelTest();
   virtual ~PixelTest();
 
-  virtual void SetUp() OVERRIDE;
-
   bool RunPixelTest(RenderPassList* pass_list,
                     const base::FilePath& ref_file,
                     const PixelComparator& comparator);
 
   gfx::Size device_viewport_size_;
   scoped_ptr<OutputSurface> output_surface_;
   scoped_ptr<ResourceProvider> resource_provider_;
   class PixelTestRendererClient;
   scoped_ptr<PixelTestRendererClient> fake_client_;
-  scoped_ptr<GLRenderer> renderer_;
+  scoped_ptr<DirectRenderer> renderer_;
   scoped_ptr<SkBitmap> result_bitmap_;
 
+  void SetUpGLRenderer();
+  void SetUpSoftwareRenderer();
+
  private:
   void ReadbackResult(scoped_ptr<SkBitmap> bitmap);
 
   bool PixelsMatchReference(const base::FilePath& ref_file,
                             const PixelComparator& comparator);
 };
 
+template<typename RendererType>
+class RendererPixelTest : public PixelTest {
+ public:
+  RendererType* renderer() {
+    return static_cast<RendererType*>(renderer_.get());
+  }
+
+ protected:
+  virtual void SetUp() OVERRIDE;
+};
+
+template<>
+inline void RendererPixelTest<GLRenderer>::SetUp() {
+  SetUpGLRenderer();
+}
+
+template<>
+inline void RendererPixelTest<SoftwareRenderer>::SetUp() {
+  SetUpSoftwareRenderer();
+}
+
+typedef RendererPixelTest<GLRenderer> GLRendererPixelTest;
+typedef RendererPixelTest<SoftwareRenderer> SoftwareRendererPixelTest;
+
 }  // namespace cc
 
 #endif  // CC_TEST_PIXEL_TEST_H_