Add InProcessContextProvider and update InProcessCommandBuffer

gpu/ipc/service/gpu_channel_manager.h

Index: gpu/ipc/service/gpu_channel_manager.h
diff --git a/gpu/ipc/service/gpu_channel_manager.h b/gpu/ipc/service/gpu_channel_manager.h
index a71ca9b41a55deaf7fb5459a5a797a40f3862e5e..797dad1039489ef302cc37a86b450e334aae30e1 100644
--- a/gpu/ipc/service/gpu_channel_manager.h
+++ b/gpu/ipc/service/gpu_channel_manager.h
@@ -133,6 +133,12 @@ class GPU_EXPORT GpuChannelManager {
     return exiting_for_lost_context_;
   }
 
+  gles2::MailboxManager* mailbox_manager() const {
+    return mailbox_manager_.get();
+  }
+
+  gl::GLShareGroup* share_group() const { return share_group_.get(); }
+
  protected:
   virtual std::unique_ptr<GpuChannel> CreateGpuChannel(
       int client_id,
@@ -145,13 +151,7 @@ class GPU_EXPORT GpuChannelManager {
     return sync_point_manager_;
   }
 
-  gl::GLShareGroup* share_group() const { return share_group_.get(); }
-  gles2::MailboxManager* mailbox_manager() const {
-    return mailbox_manager_.get();
-  }
-  PreemptionFlag* preemption_flag() const {
-    return preemption_flag_.get();
-  }
+  PreemptionFlag* preemption_flag() const { return preemption_flag_.get(); }
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;