Connect up --disable-gl-multisampling to command buffer

gpu/command_buffer/service/gpu_processor.cc

Index: gpu/command_buffer/service/gpu_processor.cc
diff --git a/gpu/command_buffer/service/gpu_processor.cc b/gpu/command_buffer/service/gpu_processor.cc
index b36db6af7ae6e34fe74902065d96111ea8970b8f..45d21d7bd7a320cb5d20e17c1994a02ddb9b0bf7 100644
--- a/gpu/command_buffer/service/gpu_processor.cc
+++ b/gpu/command_buffer/service/gpu_processor.cc
@@ -52,12 +52,14 @@ GPUProcessor::~GPUProcessor() {
   Destroy();
 }
 
-bool GPUProcessor::InitializeCommon(gfx::GLContext* context,
-                                    const gfx::Size& size,
-                                    const char* allowed_extensions,
-                                    const std::vector<int32>& attribs,
-                                    gles2::GLES2Decoder* parent_decoder,
-                                    uint32 parent_texture_id) {
+bool GPUProcessor::InitializeCommon(
+    gfx::GLContext* context,
+    const gfx::Size& size,
+    const gles2::DisallowedExtensions& disallowed_extensions,
+    const char* allowed_extensions,
+    const std::vector<int32>& attribs,
+    gles2::GLES2Decoder* parent_decoder,
+    uint32 parent_texture_id) {
   DCHECK(context);
 
   if (!context->MakeCurrent())
@@ -90,6 +92,7 @@ bool GPUProcessor::InitializeCommon(gfx::GLContext* context,
   // Initialize the decoder with either the view or pbuffer GLContext.
   if (!decoder_->Initialize(context,
                             size,
+                            disallowed_extensions,
                             allowed_extensions,
                             attribs,
                             parent_decoder,