rolling back the experimental rollbacks in r2178-2179

git-svn-id: http://skia.googlecode.com/svn/trunk@2180 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGpuFactory.cpp b/gpu/src/GrGpuFactory.cpp
index c3b0242..071e67c 100644
--- a/gpu/src/GrGpuFactory.cpp
+++ b/gpu/src/GrGpuFactory.cpp
@@ -22,7 +22,7 @@
 
 GrGpu* GrGpu::Create(GrEngine engine, GrPlatform3DContext context3D) {
 
-    const GrGLInterface* glInterface;
+    const GrGLInterface* glInterface = NULL;
 
     if (kOpenGL_Shaders_GrEngine == engine ||
         kOpenGL_Fixed_GrEngine == engine) {