sync compositor: pass simple gfx types by const ref

android_webview/browser/test/rendering_test.h

Index: android_webview/browser/test/rendering_test.h
diff --git a/android_webview/browser/test/rendering_test.h b/android_webview/browser/test/rendering_test.h
index 0d510ab2b1779ec9c13b65ed03fa8e24b3d01d3b..6a24c3f8d2718d147acae5da849356c287dbf16a 100644
--- a/android_webview/browser/test/rendering_test.h
+++ b/android_webview/browser/test/rendering_test.h
@@ -35,14 +35,14 @@ class RenderingTest : public testing::Test,
   void PostInvalidate() override;
   void DetachFunctorFromView() override;
   gfx::Point GetLocationOnScreen() override;
-  void ScrollContainerViewTo(gfx::Vector2d new_value) override {}
-  void UpdateScrollState(gfx::Vector2d max_scroll_offset,
-                         gfx::SizeF contents_size_dip,
+  void ScrollContainerViewTo(const gfx::Vector2d& new_value) override {}
+  void UpdateScrollState(const gfx::Vector2d& max_scroll_offset,
+                         const gfx::SizeF& contents_size_dip,
                          float page_scale_factor,
                          float min_page_scale_factor,
                          float max_page_scale_factor) override {}
-  void DidOverscroll(gfx::Vector2d overscroll_delta,
-                     gfx::Vector2dF overscroll_velocity) override {}
+  void DidOverscroll(const gfx::Vector2d& overscroll_delta,
+                     const gfx::Vector2dF& overscroll_velocity) override {}
   void ParentDrawConstraintsUpdated(
       const ParentCompositorDrawConstraints& draw_constraints) override {}
   // WindowHooks overrides.