tracing: Make ConvertableToTraceFormat move-only scoped_ptr

android_webview/browser/browser_view_renderer.h

 // Copyright (c) 2013 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_BROWSER_BROWSER_VIEW_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 115 matching lines @@
  private:
   void SetTotalRootLayerScrollOffset(const gfx::Vector2dF& new_value_dip);
   bool CanOnDraw();
   // Posts an invalidate with fallback tick. All invalidates posted while an
   // invalidate is pending will be posted as a single invalidate after the
   // pending invalidate is done.
   void PostInvalidateWithFallback();
   void CancelFallbackTick();
   void UpdateCompositorIsActive();
   bool CompositeSW(SkCanvas* canvas);
-  scoped_refptr<base::trace_event::ConvertableToTraceFormat>
-  RootLayerStateAsValue(const gfx::Vector2dF& total_scroll_offset_dip,
-                        const gfx::SizeF& scrollable_size_dip);
+  scoped_ptr<base::trace_event::ConvertableToTraceFormat> RootLayerStateAsValue(
+      const gfx::Vector2dF& total_scroll_offset_dip,
+      const gfx::SizeF& scrollable_size_dip);
 
   bool CompositeHw();
   void ReturnUnusedResource(scoped_ptr<ChildFrame> frame);
   void ReturnResourceFromParent();
 
   // If we call up view invalidate and OnDraw is not called before a deadline,
   // then we keep ticking the SynchronousCompositor so it can make progress.
   // Do this in a two stage tick due to native MessageLoop favors delayed task,
   // so ensure delayed task is inserted only after the draw task returns.
   void PostFallbackTick();
@@ skipping 65 matching lines @@
   gfx::Vector2dF overscroll_rounding_error_;
 
   unsigned int next_compositor_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserViewRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_BROWSER_VIEW_RENDERER_H_