ui: Add EGL_ANDROID_native_fence_sync support.

ui/gl/gl_fence_egl.cc

 // Copyright 2014 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 "ui/gl/gl_fence_egl.h"
 
 #include "ui/gl/egl_util.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace gl {
 
 namespace {
 
 bool g_ignore_egl_sync_failures = false;
 
 }  // namespace
 
 // static
 void GLFenceEGL::SetIgnoreFailures() {
   g_ignore_egl_sync_failures = true;
 }
 
-GLFenceEGL::GLFenceEGL() {
-  display_ = eglGetCurrentDisplay();
-  sync_ = eglCreateSyncKHR(display_, EGL_SYNC_FENCE_KHR, NULL);
-  DCHECK(sync_ != EGL_NO_SYNC_KHR);
+GLFenceEGL::GLFenceEGL() : GLFenceEGL(EGL_SYNC_FENCE_KHR, nullptr) {
   glFlush();
 }
 
+GLFenceEGL::GLFenceEGL(GLenum type, EGLint* attribs) {
+  display_ = eglGetCurrentDisplay();
+  sync_ = eglCreateSyncKHR(display_, type, attribs);
+  DCHECK(sync_ != EGL_NO_SYNC_KHR);
+}
+
 bool GLFenceEGL::HasCompleted() {
   EGLint value = 0;
   if (eglGetSyncAttribKHR(display_, sync_, EGL_SYNC_STATUS_KHR, &value) !=
       EGL_TRUE) {
     LOG(ERROR) << "Failed to get EGLSync attribute. error code:"
                << eglGetError();
     return true;
   }
 
   DCHECK(value == EGL_SIGNALED_KHR || value == EGL_UNSIGNALED_KHR);
@@ skipping 23 matching lines @@
                << ui::GetLastEGLErrorString();
     CHECK(g_ignore_egl_sync_failures);
   }
 }
 
 GLFenceEGL::~GLFenceEGL() {
   eglDestroySyncKHR(display_, sync_);
 }
 
 }  // namespace gl