Move synchronous compositor into content/browser

content/public/browser/android/synchronous_compositor.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 CONTENT_PUBLIC_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_
-#define CONTENT_PUBLIC_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_
+#ifndef CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_
+#define CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_
 
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 class SkCanvas;
 
 namespace gfx {
 class Transform;
 };
 
 namespace content {
 
+class WebContents;
+
 class SynchronousCompositorClient;
 
 // Interface for embedders that wish to direct compositing operations
 // synchronously under their own control. Only meaningful when the
 // kEnableSyncrhonousRendererCompositor flag is specified.
 class SynchronousCompositor {
  public:
+  // Must be called once on startup, to install the synchronous compositing
+  // machinery into this process.
+  static void Init();
+
+  // Must be called once per WebContents instance. Ownership of |contents|
+  // is not transferred; ownership of the SynchronousCompositor is not returned.
+  static SynchronousCompositor* GetOrCreateForWebContents(
+      WebContents* contents);
+
   // Allows changing or resetting the client to NULL (this must be used if
   // the client is being deleted prior to the DidDestroyCompositor() call
   // being received by the client). Ownership of |client| remains with
   // the caller.
   virtual void SetClient(SynchronousCompositorClient* client) = 0;
 
   // Returns true if the compositor is fully initialized and ready to receive
   // calls to DemandDrawHw().
   virtual bool IsHwReady() = 0;
 
   // "On demand" SW draw, into the supplied canvas (observing the transform
   // and clip set there-in).
   virtual bool DemandDrawSw(SkCanvas* canvas) = 0;
 
   // "On demand" hardware draw. The content is first clipped to |damage_area|,
   // then transformed through |transform|, and finally clipped to |view_size|.
   virtual bool DemandDrawHw(
       gfx::Size view_size,
       const gfx::Transform& transform,
       gfx::Rect damage_area) = 0;
 
  protected:
   virtual ~SynchronousCompositor() {}
 };
 
 }  // namespace content
 
-#endif  // CONTENT_PUBLIC_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_
+#endif  // CONTENT_PUBLIC_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_H_