Add option to use GLContextVirtual in WGC3DIPCBI

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h

Index: webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h
diff --git a/webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h b/webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h
index 70313e540468ec17aecdd6118cdd69a1b7ee1028..e04e9e2141c39f58930ce37241af00014f9fdd5a 100644
--- a/webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h
+++ b/webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h
@@ -45,6 +45,10 @@ class GLInProcessContext;
 class WEBKIT_GPU_EXPORT WebGraphicsContext3DInProcessCommandBufferImpl
     : public NON_EXPORTED_BASE(WebKit::WebGraphicsContext3D) {
  public:
+  // Must be called before any WebGraphicsContext3DInProcessCommandBufferImpl
+  // instances are created. Default value is false.
+  static void EnableVirtualizedContext();
+
   static WebGraphicsContext3DInProcessCommandBufferImpl*
       CreateViewContext(
           const WebKit::WebGraphicsContext3D::Attributes& attributes,