Display GL window system binding information in about:gpu

ui/gl/gl_egl_api_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.
 
 #include "ui/gl/gl_egl_api_implementation.h"
+#include "ui/gl/gl_implementation.h"
 
 namespace gfx {
 
 RealEGLApi* g_real_egl;
 
 void InitializeGLBindingsEGL() {
   g_driver_egl.InitializeBindings();
   if (!g_real_egl) {
     g_real_egl = new RealEGLApi();
   }
@@ skipping 41 matching lines @@
 RealEGLApi::~RealEGLApi() {
 }
 
 void RealEGLApi::Initialize(DriverEGL* driver) {
   InitializeBase(driver);
 }
 
 TraceEGLApi::~TraceEGLApi() {
 }
 
+bool GetGLWindowSystemBindingInfoEGL(GLWindowSystemBindingInfo* info) {
+  EGLDisplay display = eglGetCurrentDisplay();
+  const char* vendor = eglQueryString(display, EGL_VENDOR);
+  const char* version = eglQueryString(display, EGL_VERSION);
+  const char* extensions = eglQueryString(display, EGL_EXTENSIONS);
+  *info = GLWindowSystemBindingInfo();
+  if (vendor)
+    info->vendor = vendor;
+  if (version)
+    info->version = version;
+  if (extensions)
+    info->extensions = extensions;
+  return true;
+}
+
 }  // namespace gfx