Always support NPOT tiling/MIPs on ES3

R=jvanverth@google.com

Author: bsalomon@google.com

Review URL: https://chromiumcodereview.appspot.com/22887022

git-svn-id: http://skia.googlecode.com/svn/trunk/src@10784 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/gl/GrGLCaps.cpp b/gpu/gl/GrGLCaps.cpp
index 5ddf21c..df8dc09 100644
--- a/gpu/gl/GrGLCaps.cpp
+++ b/gpu/gl/GrGLCaps.cpp
@@ -275,7 +275,9 @@
         }
     } else {
         // Unextended ES2 supports NPOT textures with clamp_to_edge and non-mip filters only
-        fNPOTTextureTileSupport = ctxInfo.hasExtension("GL_OES_texture_npot");
+        // ES3 has no limitations.
+        fNPOTTextureTileSupport = ctxInfo.version() >= GR_GL_VER(3,0) ||
+                                  ctxInfo.hasExtension("GL_OES_texture_npot");
     }
 
     fHWAALineSupport = (kDesktop_GrGLBinding == binding);