Revert "Replaced blink sync points with new sync tokens."

gpu/blink/webgraphicscontext3d_impl.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 "gpu/blink/webgraphicscontext3d_impl.h"
 
 #include "base/atomicops.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "gpu/GLES2/gl2extchromium.h"
@@ skipping 195 matching lines @@
   if (std::find(synthetic_errors_.begin(), synthetic_errors_.end(), error) ==
       synthetic_errors_.end()) {
     synthetic_errors_.push_back(error);
   }
 }
 
 uint32_t WebGraphicsContext3DImpl::lastFlushID() {
   return flush_id_;
 }
 
-DELEGATE_TO_GL_R(insertFenceSyncCHROMIUM, InsertFenceSyncCHROMIUM, WGC3Duint64)
+bool WebGraphicsContext3DImpl::insertSyncPoint(WGC3Dbyte* sync_token) {
+  const uint32_t sync_point = gl_->InsertSyncPointCHROMIUM();
+  if (!sync_point)
+    return false;
 
-bool WebGraphicsContext3DImpl::genSyncTokenCHROMIUM(WGC3Duint64 fenceSync,
-                                                    WGC3Dbyte* syncToken) {
-  gl_->GenSyncTokenCHROMIUM(fenceSync, syncToken);
+  gpu::SyncToken sync_token_data(sync_point);
+  memcpy(sync_token, &sync_token_data, sizeof(sync_token_data));
   return true;
 }
 
-DELEGATE_TO_GL_1(waitSyncTokenCHROMIUM, WaitSyncTokenCHROMIUM, const WGC3Dbyte*)
-
 DELEGATE_TO_GL_3(reshapeWithScaleFactor, ResizeCHROMIUM, int, int, float)
 
 DELEGATE_TO_GL_4R(mapBufferSubDataCHROMIUM, MapBufferSubDataCHROMIUM, WGC3Denum,
                   WGC3Dintptr, WGC3Dsizeiptr, WGC3Denum, void*)
 
 DELEGATE_TO_GL_1(unmapBufferSubDataCHROMIUM, UnmapBufferSubDataCHROMIUM,
                  const void*)
 
 DELEGATE_TO_GL_9R(mapTexSubImage2DCHROMIUM, MapTexSubImage2DCHROMIUM, WGC3Denum,
                   WGC3Dint, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei,
@@ skipping 645 matching lines @@
 void WebGraphicsContext3DImpl::shallowFlushCHROMIUM() {
   flush_id_ = GenFlushID();
   gl_->ShallowFlushCHROMIUM();
 }
 
 void WebGraphicsContext3DImpl::shallowFinishCHROMIUM() {
   flush_id_ = GenFlushID();
   gl_->ShallowFinishCHROMIUM();
 }
 
+DELEGATE_TO_GL_1(waitSyncToken, WaitSyncTokenCHROMIUM, const WGC3Dbyte*)
+
 void WebGraphicsContext3DImpl::loseContextCHROMIUM(
     WGC3Denum current, WGC3Denum other) {
   gl_->LoseContextCHROMIUM(current, other);
   gl_->Flush();
 }
 
 DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
 DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
                  WGC3Denum, const WGC3Dbyte*)
 DELEGATE_TO_GL_3(produceTextureDirectCHROMIUM, ProduceTextureDirectCHROMIUM,
@@ skipping 371 matching lines @@
       output_attribs->context_type = ::gpu::gles2::CONTEXT_TYPE_WEBGL2;
       break;
     default:
       NOTREACHED();
       output_attribs->context_type = ::gpu::gles2::CONTEXT_TYPE_OPENGLES2;
       break;
   }
 }
 
 }  // namespace gpu_blink