Use glGetStringi to get extensions when available.
Review URL: https://codereview.chromium.org/12328111

git-svn-id: http://skia.googlecode.com/svn/trunk@7872 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/BenchGpuTimer_gl.cpp b/bench/BenchGpuTimer_gl.cpp
index d2de122..1b317c6 100644
--- a/bench/BenchGpuTimer_gl.cpp
+++ b/bench/BenchGpuTimer_gl.cpp
@@ -15,8 +15,8 @@
     glctx->makeCurrent();
     fStarted = false;
     fSupported = GrGLGetVersion(glctx->gl()) > GR_GL_VER(3,3) ||
-                 GrGLHasExtension(glctx->gl(), "GL_ARB_timer_query") ||
-                 GrGLHasExtension(glctx->gl(), "GL_EXT_timer_query");
+                 glctx->hasExtension("GL_ARB_timer_query") ||
+                 glctx->hasExtension("GL_EXT_timer_query");
 
     if (fSupported) {
         SK_GL(*glctx, GenQueries(1, &fQuery));