Add support to send optimal format as part of ScheduleOverlayPlane

cc/output/gl_renderer_unittest.cc

Index: cc/output/gl_renderer_unittest.cc
diff --git a/cc/output/gl_renderer_unittest.cc b/cc/output/gl_renderer_unittest.cc
index 97bd2d992ea4cbcd3b5ecece6401fe735ed04edd..c11cbc364dba52039f1ef50df9c8fc7495248f94 100644
--- a/cc/output/gl_renderer_unittest.cc
+++ b/cc/output/gl_renderer_unittest.cc
@@ -2124,12 +2124,14 @@ class WaitSyncTokenCountingContext : public TestWebGraphicsContext3D {
 
 class MockOverlayScheduler {
  public:
-  MOCK_METHOD5(Schedule,
+  MOCK_METHOD7(Schedule,
                void(int plane_z_order,
                     gfx::OverlayTransform plane_transform,
+                    gfx::BufferFormat storage_format,
                     unsigned overlay_texture_id,
                     const gfx::Rect& display_bounds,
-                    const gfx::RectF& uv_rect));
+                    const gfx::RectF& uv_rect,
+                    bool handle_scaling));
 };
 
 TEST_F(GLRendererTest, OverlaySyncTokensAreProcessed) {
@@ -2199,9 +2201,11 @@ TEST_F(GLRendererTest, OverlaySyncTokensAreProcessed) {
   // Verify that overlay_quad actually gets turned into an overlay, and even
   // though it's not drawn, that its sync point is waited on.
   EXPECT_CALL(*context, waitSyncToken(MatchesSyncToken(sync_token))).Times(1);
-  EXPECT_CALL(overlay_scheduler,
-              Schedule(1, gfx::OVERLAY_TRANSFORM_NONE, _, viewport_rect,
-                       BoundingRect(uv_top_left, uv_bottom_right))).Times(1);
+  EXPECT_CALL(
+      overlay_scheduler,
+      Schedule(1, gfx::OVERLAY_TRANSFORM_NONE, gfx::BufferFormat::BGRX_8888, _,
+               viewport_rect, BoundingRect(uv_top_left, uv_bottom_right), true))
+      .Times(1);
 
   renderer.DrawFrame(&render_passes_in_draw_order_, 1.f, viewport_rect,
                      viewport_rect, false);