Fix build breakage.



git-svn-id: http://skia.googlecode.com/svn/trunk@8265 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrPaint.h b/include/gpu/GrPaint.h
index 8e2ebcd..e0a9203 100644
--- a/include/gpu/GrPaint.h
+++ b/include/gpu/GrPaint.h
@@ -260,7 +260,7 @@
         return true;
     }
 
-    friend GrContext; // To access above two functions
+    friend class GrContext; // To access above two functions
 
     GrEffectStage               fColorStages[kMaxColorStages];
     GrEffectStage               fCoverageStages[kMaxCoverageStages];