Enable accelerated compositing of web pages when using webkit compositor

content/browser/renderer_host/accelerated_surface_container_linux_cc.cc

+// 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.
+
+#include "content/browser/renderer_host/accelerated_surface_container_linux.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/renderer_host/image_transport_client.h"
+#include "ui/gfx/compositor/compositor_cc.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/transform.h"
+
+namespace {
+
+class AcceleratedSurfaceContainerLinuxCC
+    : public AcceleratedSurfaceContainerLinux, public ui::TextureCC {
+ public:
+  explicit AcceleratedSurfaceContainerLinuxCC(const gfx::Size& size)
+      : size_(size) {
+  }
+
+  virtual ~AcceleratedSurfaceContainerLinuxCC() {
+    if (image_transport_client_.get())
+      image_transport_client_->Release();
+  }
+
+  virtual void AddRef() { ui::TextureCC::AddRef(); }
+  virtual void Release() { ui::TextureCC::Release(); }
+
+  virtual bool Initialize(uint64* surface_id) OVERRIDE {
+    ui::SharedResourcesCC* instance = ui::SharedResourcesCC::GetInstance();
+    DCHECK(instance);
+    image_transport_client_.reset(
+        ImageTransportClient::Create(instance, size_));
+    if (!image_transport_client_.get())
+      return false;
+
+    texture_id_ = image_transport_client_->Initialize(surface_id);
+    if (!texture_id_) {
+      image_transport_client_.reset();
+      return false;
+    }
+    flipped_ = image_transport_client_->Flipped();
+    image_transport_client_->Acquire();
+    return true;
+  }
+
+  // TextureCC implementation
+  virtual void Update() OVERRIDE {
+    ui::SharedResourcesCC* instance = ui::SharedResourcesCC::GetInstance();
+    DCHECK(instance);
+    instance->MakeSharedContextCurrent();
+    image_transport_client_->Release();
+    image_transport_client_->Acquire();
+  }
+
+  virtual TransportDIB::Handle Handle() const {
+    return image_transport_client_->Handle();
+  }
+
+  virtual ui::Texture* GetTexture() { return this; }
+
+ private:
+  scoped_ptr<ImageTransportClient> image_transport_client_;
+  gfx::Size size_;
+  DISALLOW_COPY_AND_ASSIGN(AcceleratedSurfaceContainerLinuxCC);
+};
+
+}  // namespace
+
+// static
+AcceleratedSurfaceContainerLinux*
+AcceleratedSurfaceContainerLinux::Create(const gfx::Size& size) {
+  return new AcceleratedSurfaceContainerLinuxCC(size);
+}