Attach flag to use virtual context for WebGraphicsContext3D

content/common/gpu/client/gpu_channel_host.cc

Index: content/common/gpu/client/gpu_channel_host.cc
diff --git a/content/common/gpu/client/gpu_channel_host.cc b/content/common/gpu/client/gpu_channel_host.cc
index d5bb6b37ab7e03007e4a9b040a666670089dee3e..a4c9421a45c3ecd26215e1098413e142daac2ccc 100644
--- a/content/common/gpu/client/gpu_channel_host.cc
+++ b/content/common/gpu/client/gpu_channel_host.cc
@@ -132,6 +132,7 @@ CommandBufferProxyImpl* GpuChannelHost::CreateViewCommandBuffer(
     const std::string& allowed_extensions,
     const std::vector<int32>& attribs,
     const GURL& active_url,
+    bool use_virtual_gl_context,
     gfx::GpuPreference gpu_preference) {
   TRACE_EVENT1("gpu",
                "GpuChannelHost::CreateViewCommandBuffer",
@@ -150,6 +151,7 @@ CommandBufferProxyImpl* GpuChannelHost::CreateViewCommandBuffer(
   init_params.attribs = attribs;
   init_params.active_url = active_url;
   init_params.gpu_preference = gpu_preference;
+  init_params.use_virtual_gl_context = use_virtual_gl_context;
   int32 route_id = factory_->CreateViewCommandBuffer(surface_id, init_params);
   if (route_id == MSG_ROUTING_NONE)
     return NULL;
@@ -167,6 +169,7 @@ CommandBufferProxyImpl* GpuChannelHost::CreateOffscreenCommandBuffer(
     const std::string& allowed_extensions,
     const std::vector<int32>& attribs,
     const GURL& active_url,
+    bool use_virtual_gl_context,
     gfx::GpuPreference gpu_preference) {
   TRACE_EVENT0("gpu", "GpuChannelHost::CreateOffscreenCommandBuffer");
 
@@ -182,6 +185,7 @@ CommandBufferProxyImpl* GpuChannelHost::CreateOffscreenCommandBuffer(
   init_params.attribs = attribs;
   init_params.active_url = active_url;
   init_params.gpu_preference = gpu_preference;
+  init_params.use_virtual_gl_context = use_virtual_gl_context;
   int32 route_id;
   if (!Send(new GpuChannelMsg_CreateOffscreenCommandBuffer(size,
                                                            init_params,