Update from https://crrev.com/318214

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 729 matching lines @@
   return GetHelper(pname, params);
 }
 
 bool GLES2Implementation::GetInternalformativHelper(
     GLenum target, GLenum format, GLenum pname, GLsizei bufSize,
     GLint* params) {
   // TODO(zmo): Implement the client side caching.
   return false;
 }
 
+bool GLES2Implementation::GetSyncivHelper(
+    GLsync sync, GLenum pname, GLsizei bufsize, GLsizei* length,
+    GLint* values) {
+  GLint value = 0;
+  switch (pname) {
+    case GL_OBJECT_TYPE:
+      value = GL_SYNC_FENCE;
+      break;
+    case GL_SYNC_CONDITION:
+      value = GL_SYNC_GPU_COMMANDS_COMPLETE;
+      break;
+    case GL_SYNC_FLAGS:
+      value = 0;
+      break;
+    default:
+      return false;
+  }
+  if (bufsize > 0) {
+    DCHECK(values);
+    *values = value;
+  }
+  if (length) {
+    *length = 1;
+  }
+  return true;
+}
+
 GLuint GLES2Implementation::GetMaxValueInBufferCHROMIUMHelper(
     GLuint buffer_id, GLsizei count, GLenum type, GLuint offset) {
   typedef cmds::GetMaxValueInBufferCHROMIUM::Result Result;
   Result* result = GetResultAs<Result*>();
   if (!result) {
     return 0;
   }
   *result = 0;
   helper_->GetMaxValueInBufferCHROMIUM(
       buffer_id, count, type, offset, GetResultShmId(), GetResultShmOffset());
@@ skipping 4204 matching lines @@
   CheckGLError();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu