Use EXT_robustness where available on GLES2 platforms to detect and respond to resets of the graphi…

ui/gl/gl_surface_glx.cc

Index: ui/gl/gl_surface_glx.cc
diff --git a/ui/gl/gl_surface_glx.cc b/ui/gl/gl_surface_glx.cc
index dcafb21241bed5c73d1ed9a58dc6c192ae243675..889dbc9283da83f084f85aec20c19a1e74aca786 100644
--- a/ui/gl/gl_surface_glx.cc
+++ b/ui/gl/gl_surface_glx.cc
@@ -78,17 +78,7 @@ const char* GLSurfaceGLX::GetGLXExtensions() {
 
 // static
 bool GLSurfaceGLX::HasGLXExtension(const char* name) {
-  DCHECK(name);
-  const char* c_extensions = GetGLXExtensions();
-  if (!c_extensions)
-    return false;
-  std::string extensions(c_extensions);
-  extensions += " ";
-
-  std::string delimited_name(name);
-  delimited_name += " ";
-
-  return extensions.find(delimited_name) != std::string::npos;
+  return ExtensionsContain(GetGLXExtensions(), name);
 }
 
 // static