Mailbox support for texture layers.

cc/resource_provider.h

 // Copyright 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 CC_RESOURCE_PROVIDER_H_
 #define CC_RESOURCE_PROVIDER_H_
 
+#include <deque>
+#include <string>
+#include <vector>
+
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "cc/cc_export.h"
 #include "cc/output_surface.h"
 #include "cc/texture_copier.h"
 #include "cc/transferable_resource.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/gfx/size.h"
-#include <deque>
-#include <vector>
 
 namespace WebKit {
 class WebGraphicsContext3D;
 }
 
 namespace gfx {
 class Rect;
 class Vector2d;
 }
 
@@ skipping 43 matching lines @@
     // Creates a resource which is tagged as being managed for GPU memory accounting purposes.
     ResourceId createManagedResource(const gfx::Size&, GLenum format, TextureUsageHint);
 
     // You can also explicitly create a specific resource type.
     ResourceId createGLTexture(const gfx::Size&, GLenum format, GLenum texturePool, TextureUsageHint);
 
     ResourceId createBitmap(const gfx::Size&);
     // Wraps an external texture into a GL resource.
     ResourceId createResourceFromExternalTexture(unsigned textureId);
 
+    // Wraps an external texture mailbox into a GL resource.
+    ResourceId createResourceFromTextureMailbox(const std::string& mailboxName, const base::Callback<void(unsigned)>& releaseCallback);

[jamesr, 2013/01/07 21:11:49]

this is what I was talking about.  ResourceProvider shouldn't depend on
TextureLayer, though - maybe this one is OK (TextureLayer can't really depend on
ResourceProvider directly either)

[alexst (slow to review), 2013/01/07 21:38:47]

I agree it would look better.

Maybe splitting the mailbox into its own header and putting the typedef there is
a good way to go.

+
     void deleteResource(ResourceId);
 
     // Update pixels from image, copying sourceRect (in image) into destRect (in the resource).
     void setPixels(ResourceId, const uint8_t* image, const gfx::Rect& imageRect, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset);
 
     // Check upload status.
     size_t numBlockingUploads();
     void markPendingUploadsAsNonBlocking();
     double estimatedUploadsPerSecond();
     void flushUploads();
@@ skipping 199 matching lines @@
     GLenum m_bestTextureFormat;
 
     base::ThreadChecker m_threadChecker;
 
     DISALLOW_COPY_AND_ASSIGN(ResourceProvider);
 };
 
 }
 
 #endif  // CC_RESOURCE_PROVIDER_H_