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

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index b42c220ec13f84e0581fbc37e089b2a5315301e2..0d9f326e5f916c441e593860bc19d2b208bbba84 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -670,6 +670,7 @@ class GLES2DecoderImpl : public base::SupportsWeakPtr<GLES2DecoderImpl>,
   // Overridden from GLES2Decoder.
   virtual bool Initialize(gfx::GLContext* context,
                           const gfx::Size& size,
+                          const DisallowedExtensions& disallowed_extensions,
                           const char* allowed_extensions,
                           const std::vector<int32>& attribs,
                           GLES2Decoder* parent,
@@ -1442,6 +1443,8 @@ class GLES2DecoderImpl : public base::SupportsWeakPtr<GLES2DecoderImpl>,
   scoped_ptr<ShaderTranslator> vertex_translator_;
   scoped_ptr<ShaderTranslator> fragment_translator_;
 
+  DisallowedExtensions disallowed_extensions_;
+
   // Cached from ContextGroup
   const Validators* validators_;
   FeatureInfo* feature_info_;
@@ -1787,12 +1790,14 @@ GLES2DecoderImpl::GLES2DecoderImpl(ContextGroup* group)
   }
 }
 
-bool GLES2DecoderImpl::Initialize(gfx::GLContext* context,
-                                  const gfx::Size& size,
-                                  const char* allowed_extensions,
-                                  const std::vector<int32>& attribs,
-                                  GLES2Decoder* parent,
-                                  uint32 parent_client_texture_id) {
+bool GLES2DecoderImpl::Initialize(
+    gfx::GLContext* context,
+    const gfx::Size& size,
+    const DisallowedExtensions& disallowed_extensions,
+    const char* allowed_extensions,
+    const std::vector<int32>& attribs,
+    GLES2Decoder* parent,
+    uint32 parent_client_texture_id) {
   DCHECK(context);
   DCHECK(!context_.get());
 
@@ -1811,7 +1816,7 @@ bool GLES2DecoderImpl::Initialize(gfx::GLContext* context,
     return false;
   }
 
-  if (!group_->Initialize(allowed_extensions)) {
+  if (!group_->Initialize(disallowed_extensions, allowed_extensions)) {
     LOG(ERROR) << "GPUProcessor::InitializeCommon failed because group "
                << "failed to initialize.";
     Destroy();
@@ -1819,6 +1824,7 @@ bool GLES2DecoderImpl::Initialize(gfx::GLContext* context,
   }
 
   CHECK_GL_ERROR();
+  disallowed_extensions_ = disallowed_extensions;
 
   vertex_attrib_manager_.Initialize(group_->max_vertex_attribs());
 
@@ -6168,7 +6174,7 @@ error::Error GLES2DecoderImpl::HandleGetRequestableExtensionsCHROMIUM(
     const gles2::GetRequestableExtensionsCHROMIUM& c) {
   Bucket* bucket = CreateBucket(c.bucket_id);
   scoped_ptr<FeatureInfo> info(new FeatureInfo());
-  info->Initialize(NULL);
+  info->Initialize(disallowed_extensions_, NULL);
   bucket->SetFromString(info->extensions().c_str());
   return error::kNoError;
 }