Added gpu AA clipping to old shader path

http://codereview.appspot.com/6139065/



git-svn-id: http://skia.googlecode.com/svn/trunk@3812 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDrawTarget.cpp b/src/gpu/GrDrawTarget.cpp
index c5dd3ec..037f0f8 100644
--- a/src/gpu/GrDrawTarget.cpp
+++ b/src/gpu/GrDrawTarget.cpp
@@ -20,7 +20,7 @@
 /**
  * This function generates some masks that we like to have known at compile
  * time. When the number of stages or tex coords is bumped or the way bits
- * are defined in GrDrawTarget.h changes this funcion should be rerun to
+ * are defined in GrDrawTarget.h changes this function should be rerun to
  * generate the new masks. (We attempted to force the compiler to generate the
  * masks using recursive templates but always wound up with static initializers
  * under gcc, even if they were just a series of immediate->memory moves.)