Display GL window system binding information in about:gpu

ui/gl/gl_egl_api_implementation.cc

Index: ui/gl/gl_egl_api_implementation.cc
diff --git a/ui/gl/gl_egl_api_implementation.cc b/ui/gl/gl_egl_api_implementation.cc
index ba3e9cf923ce9a909015b6e18d2add3ac043b8a4..43aa138a3f83c8e5f2301e530c8b5f2b8a844a0d 100644
--- a/ui/gl/gl_egl_api_implementation.cc
+++ b/ui/gl/gl_egl_api_implementation.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "ui/gl/gl_egl_api_implementation.h"
+#include "ui/gl/gl_implementation.h"
 
 namespace gfx {
 
@@ -64,6 +65,21 @@ void RealEGLApi::Initialize(DriverEGL* 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