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

ui/gl/gl_implementation_win.cc

Index: ui/gl/gl_implementation_win.cc
diff --git a/ui/gl/gl_implementation_win.cc b/ui/gl/gl_implementation_win.cc
index 40cbdde91319156e7ae91e42f19ffc51520d17e8..8b9d64f729b40ebc8ed27f1913e01bd51b0cb643 100644
--- a/ui/gl/gl_implementation_win.cc
+++ b/ui/gl/gl_implementation_win.cc
@@ -297,8 +297,10 @@ bool InitializeStaticGLBindings(GLImplementation implementation) {
 bool InitializeDynamicGLBindings(GLImplementation implementation,
     GLContext* context) {
   switch (implementation) {
-    case kGLImplementationOSMesaGL:
     case kGLImplementationEGLGLES2:
+      InitializeDynamicGLBindingsEGL(context);
+      // Intentionally fall through to also initialize Dynamic GL Bindings.
+    case kGLImplementationOSMesaGL:
     case kGLImplementationDesktopGL:
       InitializeDynamicGLBindingsGL(context);
       break;