Allow browser compositor to create an offscreen context3D.

content/common/webkitplatformsupport_impl.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 "base/command_line.h"
 #include "content/common/child_thread.h"
+#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/socket_stream_dispatcher.h"
 #include "content/common/webkitplatformsupport_impl.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/content_switches.h"
+#include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 namespace content {
 
 WebKitPlatformSupportImpl::WebKitPlatformSupportImpl() {
 }
 
 WebKitPlatformSupportImpl::~WebKitPlatformSupportImpl() {
 }
 
 string16 WebKitPlatformSupportImpl::GetLocalizedString(int message_id) {
@@ skipping 20 matching lines @@
 
 webkit_glue::WebSocketStreamHandleBridge*
 WebKitPlatformSupportImpl::CreateWebSocketBridge(
     WebKit::WebSocketStreamHandle* handle,
     webkit_glue::WebSocketStreamHandleDelegate* delegate) {
   SocketStreamDispatcher* dispatcher =
       ChildThread::current()->socket_stream_dispatcher();
   return dispatcher->CreateBridge(handle, delegate);
 }
 
+WebKit::WebGraphicsContext3D*
+WebKitPlatformSupportImpl::createOffscreenGraphicsContext3D(
+    const WebGraphicsContext3D::Attributes& attributes) {
+  // The WebGraphicsContext3DInProcessImpl code path is used for
+  // layout tests (though not through this code) as well as for
+  // debugging and bringing up new ports.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL)) {
+    return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
+            attributes, false);
+  } else {
+    base::WeakPtr<WebGraphicsContext3DSwapBuffersClient> null_client;
+    scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
+        new WebGraphicsContext3DCommandBufferImpl(0, GURL(), null_client));
+    if (!context->Initialize(attributes))
+      return NULL;
+    return context.release();
+  }
+}
+
 }  // namespace content