Cleanup: Go with SkDebugf instead of GrPrintf.

src/gpu/GrGpuFactory.cpp

Index: src/gpu/GrGpuFactory.cpp
diff --git a/src/gpu/GrGpuFactory.cpp b/src/gpu/GrGpuFactory.cpp
index 16405b488d635ca0dec2c2aba25ddeb6b289907b..6397bb2d5ccdd7e7d947920bbfdc3d1dc83be815 100644
--- a/src/gpu/GrGpuFactory.cpp
+++ b/src/gpu/GrGpuFactory.cpp
@@ -30,7 +30,7 @@ GrGpu* GrGpu::Create(GrBackend backend, GrBackendContext backendContext, GrConte
         }
         if (NULL == glInterface) {
 #ifdef SK_DEBUG
-            GrPrintf("No GL interface provided!\n");
+            SkDebugf("No GL interface provided!\n");
 #endif
             return NULL;
         }