Fix layering violation where content is included by gpu.

gpu/ipc/command_buffer_proxy.h

Index: gpu/ipc/command_buffer_proxy.h
diff --git a/gpu/ipc/command_buffer_proxy.h b/gpu/ipc/command_buffer_proxy.h
index 3ce13de5778e3cf6fcfd26c45f5291c8f7849b72..a992369e9aee9344fa3a2f1efa47a150e098870a 100644
--- a/gpu/ipc/command_buffer_proxy.h
+++ b/gpu/ipc/command_buffer_proxy.h
@@ -11,11 +11,6 @@
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/command_buffer_shared.h"
 
-// TODO(fsamuel): this is a layering violation. http://crbug.com/157175
-namespace content {
-struct GpuMemoryAllocationForRenderer;
-}
-
 // Client side proxy that forwards messages synchronously to a
 // CommandBufferStub.
 class GPU_EXPORT CommandBufferProxy : public gpu::CommandBuffer {
@@ -33,33 +28,6 @@ class GPU_EXPORT CommandBufferProxy : public gpu::CommandBuffer {
   // the task whether the echo succeeds or not.
   virtual bool Echo(const base::Closure& callback) = 0;
 
-  // Sends an IPC message with the new state of surface visibility.
-  virtual bool SetSurfaceVisible(bool visible) = 0;
-
-  virtual bool DiscardBackbuffer() = 0;
-  virtual bool EnsureBackbuffer() = 0;
-
-  // Inserts a sync point, returning its ID. This is handled on the IO thread of
-  // the GPU process, and so should be relatively fast, but its effect is
-  // ordered wrt other messages (in particular, Flush). Sync point IDs are
-  // global and can be used for cross-channel synchronization.
-  virtual uint32 InsertSyncPoint() = 0;
-
-  // Makes this command buffer wait on a sync point. This command buffer will be
-  // unscheduled until the command buffer that inserted that sync point reaches
-  // it, or gets destroyed.
-  virtual void WaitSyncPoint(uint32) = 0;
-
-  // Makes this command buffer invoke a task when a sync point is reached, or
-  // the command buffer that inserted that sync point is destroyed.
-  virtual bool SignalSyncPoint(uint32 sync_point,
-                               const base::Closure& callback) = 0;
-
-  // Register a callback to invoke whenever we recieve a new memory allocation.
-  virtual void SetMemoryAllocationChangedCallback(
-      const base::Callback<void(
-          const content::GpuMemoryAllocationForRenderer&)>& callback) = 0;
-
   // Reparent a command buffer. TODO(apatrick): going forward, the notion of
   // the parent / child relationship between command buffers is going away in
   // favor of the notion of surfaces that can be drawn to in one command buffer
@@ -69,13 +37,6 @@ class GPU_EXPORT CommandBufferProxy : public gpu::CommandBuffer {
 
   virtual void SetChannelErrorCallback(const base::Closure& callback) = 0;
 
-  // Set a task that will be invoked the next time the window becomes invalid
-  // and needs to be repainted. Takes ownership of task.
-  virtual void SetNotifyRepaintTask(const base::Closure& callback) = 0;
-
-  virtual void SetOnConsoleMessageCallback(
-      const GpuConsoleMessageCallback& callback) = 0;
-
  private:
   DISALLOW_COPY_AND_ASSIGN(CommandBufferProxy);
 };