Implemented new fence syncs which replaces the old sync points.

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index de46cf4a5b32b44cbdf53303266ddbeec22d91c8..4b5ea4addb0d2709c604c06fc3cd24549d5f813f 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -5369,6 +5369,51 @@ void GLES2Implementation::RetireSyncPointCHROMIUM(GLuint sync_point) {
   gpu_control_->RetireSyncPoint(sync_point);
 }
 
+GLuint GLES2Implementation::InsertFenceSyncCHROMIUM() {
+  const uint32_t release = helper_->GenerateFenceSyncRelease();
+  helper_->InsertFenceSyncCHROMIUM(release);
+  return release;
+}
+
+void GLES2Implementation::GenSyncTokenCHROMIUM(GLuint fence_sync,
+                                               GLbyte* sync_token) {
+  if (!sync_token) {
+    SetGLError(GL_INVALID_VALUE, "glGenSyncTokenCHROMIUM", "empty sync_token");
+    return;
+  } else if (!helper_->IsFenceSyncRelease(fence_sync)) {
+    SetGLError(GL_INVALID_VALUE, "glGenSyncTokenCHROMIUM",
+               "invalid fence sync");
+    return;
+  } else if (!helper_->IsFenceSyncFlushed(fence_sync)) {
+    SetGLError(GL_INVALID_OPERATION, "glGenSyncTokenCHROMIUM",
+               "fence sync must be flushed before generating sync token");
+    return;
+  }
+
+  int channel_id = 0;
+  uint32_t route_id = 0;
+  helper_->command_buffer()->GetRouteInformation(&channel_id, &route_id);
+
+  SyncToken* sync_token_data = reinterpret_cast<SyncToken*>(sync_token);
+  memset(sync_token_data, 0, sizeof(SyncToken));
+  sync_token_data->channel_client_id = channel_id;
+  sync_token_data->route_id = route_id;
+  sync_token_data->release_count = fence_sync;
+}
+
+void GLES2Implementation::WaitSyncTokenCHROMIUM(const GLbyte* sync_token) {
+  if (!sync_token) {
+    SetGLError(GL_INVALID_VALUE, "glWaitSyncTokenCHROMIUM", "empty sync_token");
+    return;
+  };
+
+  const SyncToken* sync_token_data =
+      reinterpret_cast<const SyncToken*>(sync_token);
+  helper_->WaitSyncTokenCHROMIUM(sync_token_data->channel_client_id,
+                                 sync_token_data->route_id,
+                                 sync_token_data->release_count);
+}
+
 namespace {
 
 bool ValidImageFormat(GLenum internalformat,