Add mouse input forwarding to gpu service

gpu/command_buffer/service/in_process_command_buffer.h

Index: gpu/command_buffer/service/in_process_command_buffer.h
diff --git a/gpu/command_buffer/service/in_process_command_buffer.h b/gpu/command_buffer/service/in_process_command_buffer.h
index cb1ab28999970fb70097ed3d372fb4e1b709ed3d..22f7298b398de7bcc2f0f7805a2dea68b9dd93a0 100644
--- a/gpu/command_buffer/service/in_process_command_buffer.h
+++ b/gpu/command_buffer/service/in_process_command_buffer.h
@@ -51,6 +51,7 @@ namespace gles2 {
 class GLES2Decoder;
 class MailboxManager;
 class ShaderTranslatorCache;
+class ValuebufferManager;
 }
 
 class CommandBufferServiceBase;
@@ -138,9 +139,11 @@ class GPU_EXPORT InProcessCommandBuffer : public CommandBuffer,
     virtual scoped_refptr<gles2::ShaderTranslatorCache>
         shader_translator_cache() = 0;
     scoped_refptr<gles2::MailboxManager> mailbox_manager();
+    scoped_refptr<gles2::ValuebufferManager> valuebuffer_manager();
 
    private:
     scoped_refptr<gles2::MailboxManager> mailbox_manager_;
+    scoped_refptr<gles2::ValuebufferManager> valuebuffer_manager_;
   };
 
 #if defined(OS_ANDROID)