Provide shared context to Platform API in renderer.

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index 99c336a76929a5a581fbf6865ebda523fd0713e9..f9ad8f7146865e885db5893cd80de9740927beb2 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -16,6 +16,7 @@
 #include "content/common/fileapi/webblobregistry_impl.h"
 #include "content/common/fileapi/webfilesystem_impl.h"
 #include "content/common/file_utilities_messages.h"
+#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/npobject_util.h"
@@ -50,6 +51,7 @@
 #include "webkit/glue/webclipboard_impl.h"
 #include "webkit/glue/webfileutilities_impl.h"
 #include "webkit/glue/webkit_glue.h"
+#include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 #if defined(OS_WIN)
 #include "content/common/child_process_messages.h"
@@ -733,11 +735,6 @@ void RendererWebKitPlatformSupportImpl::SetMockGamepadsForTesting(
   g_test_gamepads.Get() = pads;
 }
 
-GpuChannelHostFactory*
-RendererWebKitPlatformSupportImpl::GetGpuChannelHostFactory() {
-  return RenderThreadImpl::current();
-}
-
 //------------------------------------------------------------------------------
 
 bool RendererWebKitPlatformSupportImpl::canHyphenate(
@@ -779,4 +776,29 @@ bool RendererWebKitPlatformSupportImpl::processMemorySizesInBytes(
   return true;
 }
 
+//------------------------------------------------------------------------------
+
+WebKit::WebGraphicsContext3D* RendererWebKitPlatformSupportImpl::
+    createOffscreenGraphicsContext3D(
+        const WebKit::WebGraphicsContext3D::Attributes& attributes) {
+  if (OffscreenContextFactoryForTest())
+    return OffscreenContextFactoryForTest()();
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL)) {
+    return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
+            attributes, false);
+  } else {
+    return WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
+        RenderThreadImpl::current(), attributes,
+        GURL(attributes.topDocumentURL));
+  }
+}
+
+//------------------------------------------------------------------------------
+
+WebKit::WebGraphicsContext3D* RendererWebKitPlatformSupportImpl::
+    sharedOffscreenGraphicsContext3D() {
+  return RenderThreadImpl::current()->OffscreenContext3dForMainThread();
+}
+
+
 }  // namespace content