Switch to use SharedBitmapManager all the time in cc_unittests

cc/test/pixel_test.h

Index: cc/test/pixel_test.h
diff --git a/cc/test/pixel_test.h b/cc/test/pixel_test.h
index 07af71418707e98c7dc2cc01043a1431fe39bc2e..dc01098eb35ee1dabbd5156be20fae22ac8df2f0 100644
--- a/cc/test/pixel_test.h
+++ b/cc/test/pixel_test.h
@@ -21,6 +21,7 @@ class FakeOutputSurfaceClient;
 class OutputSurface;
 class ResourceProvider;
 class SoftwareRenderer;
+class SharedBitmapManager;
 
 class PixelTest : public testing::Test, RendererClient {
  protected:
@@ -50,6 +51,7 @@ class PixelTest : public testing::Test, RendererClient {
   class PixelTestRendererClient;
   scoped_ptr<FakeOutputSurfaceClient> output_surface_client_;
   scoped_ptr<OutputSurface> output_surface_;
+  scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
   scoped_ptr<ResourceProvider> resource_provider_;
   scoped_ptr<TextureMailboxDeleter> texture_mailbox_deleter_;
   scoped_ptr<DirectRenderer> renderer_;