Revert of Converted video frame and image callbacks to use new sync tokens.

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index 245e330224d8da6ce54a8b456b05de002f2ff642..83e3410ca7105bc43856978b30bdfa3cd9eaa4e0 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -40,10 +40,6 @@
 struct ChannelHandle;
 }
 
-namespace gpu {
-struct SyncToken;
-}
-
 namespace content {
 class BrowserChildProcessHostImpl;
 class GpuMainThread;
@@ -152,7 +148,7 @@
   // Tells the GPU process to destroy GPU memory buffer.
   void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                               int client_id,
-                              const gpu::SyncToken& sync_token);
+                              int sync_point);
 
   // What kind of GPU process, e.g. sandboxed or unsandboxed.
   GpuProcessKind kind();