Fix GL extension printing on core profiles.

src/gpu/gl/GrGLExtensions.cpp

Index: src/gpu/gl/GrGLExtensions.cpp
===================================================================
--- src/gpu/gl/GrGLExtensions.cpp	(revision 8966)
+++ src/gpu/gl/GrGLExtensions.cpp	(working copy)
@@ -81,3 +81,14 @@
                                                      sizeof(SkString));
     return idx >= 0;
 }
+
+void GrGLExtensions::print(const char* sep) const {
+    if (NULL == sep) {

[robertphillips, 2013/05/02 19:39:14]

Wouldn't " " be a better default?

[bsalomon, 2013/05/02 19:41:59]

I suppose so.. I could also just assert, was mostly just concerned about somehow
acknowledging the possibility of NULL. I'll make it " ".

+        sep = "";
+    }
+    int cnt = fStrings.count();
+    for (int i = 0; i < cnt; ++i) {
+        GrPrintf("%s%s", fStrings[i].c_str(), (i < cnt - 1) ? sep : "");
+    }
+}
+