Add mouse input forwarding to gpu service

gpu/command_buffer/service/in_process_command_buffer.cc

Index: gpu/command_buffer/service/in_process_command_buffer.cc
diff --git a/gpu/command_buffer/service/in_process_command_buffer.cc b/gpu/command_buffer/service/in_process_command_buffer.cc
index 815b197e3b178a1f8adefd9ef12ab0057bd38d36..b5a817457cdbf4565351c5a983e4598444070df6 100644
--- a/gpu/command_buffer/service/in_process_command_buffer.cc
+++ b/gpu/command_buffer/service/in_process_command_buffer.cc
@@ -31,6 +31,7 @@
 #include "gpu/command_buffer/service/memory_tracking.h"
 #include "gpu/command_buffer/service/query_manager.h"
 #include "gpu/command_buffer/service/transfer_buffer_manager.h"
+#include "gpu/command_buffer/service/valuebuffer_manager.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_image.h"
@@ -194,6 +195,14 @@ InProcessCommandBuffer::Service::mailbox_manager() {
   return mailbox_manager_;
 }
 
+scoped_refptr<gles2::ValuebufferManager>
+InProcessCommandBuffer::Service::valuebuffer_manager() {
+  if (!valuebuffer_manager_.get()) {
+    valuebuffer_manager_ = new gles2::ValuebufferManager();
+  }
+  return valuebuffer_manager_;
+}
+
 scoped_refptr<InProcessCommandBuffer::Service>
 InProcessCommandBuffer::GetDefaultService() {
   base::AutoLock lock(default_thread_clients_lock_.Get());
@@ -355,6 +364,7 @@ bool InProcessCommandBuffer::InitializeOnGpuThread(
       params.context_group
           ? params.context_group->decoder_->GetContextGroup()
           : new gles2::ContextGroup(service_->mailbox_manager(),
+                                    service_->valuebuffer_manager(),
                                     NULL,
                                     service_->shader_translator_cache(),
                                     NULL,