Rename kES2_GrGLBinding to kES_GrGLBinding. Step 0 for supporting ES3.

R=robertphillips@google.com

Review URL: https://codereview.chromium.org/23185004

git-svn-id: http://skia.googlecode.com/svn/trunk@10747 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLInterface.cpp b/src/gpu/gl/GrGLInterface.cpp
index 72d7934..8f94f10 100644
--- a/src/gpu/gl/GrGLInterface.cpp
+++ b/src/gpu/gl/GrGLInterface.cpp
@@ -150,7 +150,7 @@
     // these functions are part of ES2, we assume they are available
     // On the desktop we assume they are available if the extension
     // is present or GL version is high enough.
-    if (kES2_GrGLBinding == binding) {
+    if (kES_GrGLBinding == binding) {
         if (NULL == fStencilFuncSeparate ||
             NULL == fStencilMaskSeparate ||
             NULL == fStencilOpSeparate) {