Pass gfx structs by const ref(gfx::Vector2D/F)

cc/resources/texture_uploader.h

Index: cc/resources/texture_uploader.h
diff --git a/cc/resources/texture_uploader.h b/cc/resources/texture_uploader.h
index 72c46e7ffb5dc4013151941bb3aa2cebc83549f9..ae834083e72b341f124935907fdce82e61f34e3f 100644
--- a/cc/resources/texture_uploader.h
+++ b/cc/resources/texture_uploader.h
@@ -45,7 +45,7 @@ class CC_EXPORT TextureUploader {
   void Upload(const uint8* image,
               const gfx::Rect& content_rect,
               const gfx::Rect& source_rect,
-              gfx::Vector2d dest_offset,
+              const gfx::Vector2d& dest_offset,
               ResourceFormat format,
               const gfx::Size& size);
 
@@ -90,12 +90,12 @@ class CC_EXPORT TextureUploader {
   void UploadWithTexSubImage(const uint8* image,
                              const gfx::Rect& image_rect,
                              const gfx::Rect& source_rect,
-                             gfx::Vector2d dest_offset,
+                             const gfx::Vector2d& dest_offset,
                              ResourceFormat format);
   void UploadWithMapTexSubImage(const uint8* image,
                                 const gfx::Rect& image_rect,
                                 const gfx::Rect& source_rect,
-                                gfx::Vector2d dest_offset,
+                                const gfx::Vector2d& dest_offset,
                                 ResourceFormat format);
   void UploadWithTexImageETC1(const uint8* image, const gfx::Size& size);