Added disabling EGL extensions support with --disable-extensions.

ui/gl/gl_implementation_x11.cc

Index: ui/gl/gl_implementation_x11.cc
diff --git a/ui/gl/gl_implementation_x11.cc b/ui/gl/gl_implementation_x11.cc
index b8a724649f8c0cfe91e10586718d78e7695acd8a..d32bd78e0ebc8dbc117ca94a2f3cec2daf85e153 100644
--- a/ui/gl/gl_implementation_x11.cc
+++ b/ui/gl/gl_implementation_x11.cc
@@ -150,9 +150,11 @@ bool InitializeStaticGLBindings(GLImplementation implementation) {
 bool InitializeDynamicGLBindings(GLImplementation implementation,
     GLContext* context) {
   switch (implementation) {
-    case kGLImplementationOSMesaGL:
-   case kGLImplementationDesktopGL:
     case kGLImplementationEGLGLES2:
+      InitializeDynamicGLBindingsEGL(context);
+      // Intentionally fall through to also initialize Dynamic GL Bindings.
+    case kGLImplementationOSMesaGL:
+    case kGLImplementationDesktopGL:
       InitializeDynamicGLBindingsGL(context);
       break;
     case kGLImplementationMockGL: