Removed last references to old sync points.

ppapi/proxy/ppapi_command_buffer_proxy.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppapi_command_buffer_proxy.h"
 
 #include <utility>
 
 #include "base/numerics/safe_conversions.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 218 matching lines @@
 
 bool PpapiCommandBufferProxy::CanWaitUnverifiedSyncToken(
     const gpu::SyncToken* sync_token) {
   return false;
 }
 
 int32_t PpapiCommandBufferProxy::GetExtraCommandBufferData() const {
   return 0;
 }
 
-uint32_t PpapiCommandBufferProxy::InsertSyncPoint() {
-  NOTREACHED();
-  return 0;
-}
-
-uint32_t PpapiCommandBufferProxy::InsertFutureSyncPoint() {
-  NOTREACHED();
-  return 0;
-}
-
-void PpapiCommandBufferProxy::RetireSyncPoint(uint32_t sync_point) {
-  NOTREACHED();
-}
-
-void PpapiCommandBufferProxy::SignalSyncPoint(uint32_t sync_point,
-                                              const base::Closure& callback) {
-  NOTREACHED();
-}
-
 void PpapiCommandBufferProxy::SignalQuery(uint32_t query,
                                           const base::Closure& callback) {
   NOTREACHED();
 }
 
 gpu::Capabilities PpapiCommandBufferProxy::GetCapabilities() {
   return capabilities_;
 }
 
 int32_t PpapiCommandBufferProxy::CreateImage(ClientBuffer buffer,
@@ skipping 72 matching lines @@
   message->set_unblock(true);
   Send(message);
 
   flush_info_->flush_pending = false;
   flush_info_->resource.SetHostResource(0, 0);
   flushed_fence_sync_release_ = pending_fence_sync_release_;
 }
 
 }  // namespace proxy
 }  // namespace ppapi