Use shared D3D9 texture to transport the compositor's backing buffer to the browser...

content/browser/renderer_host/render_widget_host_view.h

 // Copyright (c) 2011 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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_
 #pragma once
 
 #if defined(OS_MACOSX)
 #include <OpenGL/OpenGL.h>
 #endif
 
 #include <string>
 #include <vector>
 
 #include "base/process_util.h"
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPopupType.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/base/range/range.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/surface/transport_dib.h"
 
+struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
+
 namespace gfx {
 class Rect;
 class Size;
 }
 namespace IPC {
 class Message;
 }
 
 class BackingStore;
 class RenderProcessHost;
@@ skipping 143 matching lines @@
   virtual void SelectionBoundsChanged(const gfx::Rect& start_rect,
                                       const gfx::Rect& end_rect) {}
 
   // Tells the View whether the context menu is showing. This is used on Linux
   // to suppress updates to webkit focus for the duration of the show.
   virtual void ShowingContextMenu(bool showing) {}
 
   // Allocate a backing store for this view
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) = 0;
 
+  // |window| and |surface_id| indicate which accelerated surface's
+  // buffers swapped. |renderer_id| and |route_id| are used to formulate
+  // a reply to the GPU process to prevent it from getting too far ahead.
+  // They may all be zero, in which case no flow control is enforced;
+  // this case is currently used for accelerated plugins.

[jonathan.backer, 2011/11/03 23:09:07]

nix the comment?

+  virtual void AcceleratedSurfaceBuffersSwapped(
+      const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
+      int gpu_host_id) = 0;
+
 #if defined(OS_MACOSX)
   // Tells the view whether or not to accept first responder status.  If |flag|
   // is true, the view does not accept first responder status and instead
   // manually becomes first responder when it receives a mouse down event.  If
   // |flag| is false, the view participates in the key-view chain as normal.
   virtual void SetTakesFocusOnlyOnMouseDown(bool flag) = 0;
 
   // Retrieve the bounds of the view, in cocoa view coordinates.
   // If the UI scale factor is 2, |GetViewBounds()| will return a size of e.g.
   // (400, 300) in pixels, while this method will return (200, 150).
@@ skipping 35 matching lines @@
   virtual void AcceleratedSurfaceSetIOSurface(
       gfx::PluginWindowHandle window,
       int32 width,
       int32 height,
       uint64 io_surface_identifier) = 0;
   virtual void AcceleratedSurfaceSetTransportDIB(
       gfx::PluginWindowHandle window,
       int32 width,
       int32 height,
       TransportDIB::Handle transport_dib) = 0;
-  // |window| and |surface_id| indicate which accelerated surface's
-  // buffers swapped. |renderer_id| and |route_id| are used to formulate
-  // a reply to the GPU process to prevent it from getting too far ahead.
-  // They may all be zero, in which case no flow control is enforced;
-  // this case is currently used for accelerated plugins.
-  virtual void AcceleratedSurfaceBuffersSwapped(
-      gfx::PluginWindowHandle window,
-      uint64 surface_id,
-      int renderer_id,
-      int32 route_id,
-      int gpu_host_id) = 0;
   virtual void GpuRenderingStateDidChange() = 0;
 #endif
 
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   virtual void AcceleratedSurfaceNew(
       int32 width,
       int32 height,
       uint64* surface_id,
       TransportDIB::Handle* surface_handle) = 0;
-  virtual void AcceleratedSurfaceBuffersSwapped(
-      uint64 surface_id,
-      int32 route_id,
-      int gpu_host_id) = 0;
   virtual void AcceleratedSurfaceRelease(uint64 surface_id) = 0;
 #endif
 
 #if defined(TOOLKIT_USES_GTK)
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id) = 0;
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id) = 0;
   virtual void AcceleratedCompositingActivated(bool activated) = 0;
 #endif
 
 #if defined(OS_WIN)
@@ skipping 81 matching lines @@
   size_t selection_text_offset_;
 
   // The current selection range relative to the start of the web page.
   ui::Range selection_range_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostView);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_H_