Add InProcessContextProvider and update InProcessCommandBuffer

gpu/ipc/gl_in_process_context.h

Index: gpu/ipc/gl_in_process_context.h
diff --git a/gpu/ipc/gl_in_process_context.h b/gpu/ipc/gl_in_process_context.h
index e03363f3acad48bfdf5a330b6a4ce4ab7d28d8a3..47d81cd5e44fb915e5033aecbecde0bc91b09ee6 100644
--- a/gpu/ipc/gl_in_process_context.h
+++ b/gpu/ipc/gl_in_process_context.h
@@ -28,6 +28,7 @@ class SurfaceTexture;
 #endif
 
 namespace gpu {
+class InProcessCommandBuffer;
 struct SharedMemoryLimits;
 
 namespace gles2 {
@@ -62,6 +63,8 @@ class GL_IN_PROCESS_CONTEXT_EXPORT GLInProcessContext {
   // can be used without making it current.
   virtual gles2::GLES2Implementation* GetImplementation() = 0;
 
+  virtual InProcessCommandBuffer* GetInProcessCommandBuffer() = 0;
+
   virtual void SetLock(base::Lock* lock) = 0;
 };