sync compositor: pass simple gfx types by const ref

android_webview/native/aw_contents.h

 // Copyright (c) 2012 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.
 
 #ifndef ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 
 #include <jni.h>
 #include <list>
 #include <string>
@@ skipping 188 matching lines @@
   // AwRenderViewHostExtClient implementation.
   void OnWebLayoutPageScaleFactorChanged(float page_scale_factor) override;
   void OnWebLayoutContentsSizeChanged(const gfx::Size& contents_size) override;
 
   // BrowserViewRendererClient implementation.
   bool RequestDrawGL(bool wait_for_completion) override;
   void PostInvalidate() override;
   void DetachFunctorFromView() override;
   void OnNewPicture() 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 {}
 
   void ClearCache(JNIEnv* env, jobject obj, jboolean include_disk_files);
   void SetPendingWebContentsForPopup(scoped_ptr<content::WebContents> pending);
   jlong ReleasePopupAwContents(JNIEnv* env, jobject obj);
 
   void ScrollTo(JNIEnv* env, jobject obj, jint x, jint y);
   void SmoothScroll(JNIEnv* env,
@@ skipping 49 matching lines @@
   GLViewRendererManager::Key renderer_manager_key_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContents);
 };
 
 bool RegisterAwContents(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_