Misc stage->effect renaming

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6787043

git-svn-id: http://skia.googlecode.com/svn/trunk@6132 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index 54f2179..6f7ebcd 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -473,7 +473,7 @@
 
     /**
      * Preconcats the current view matrix and restores the previous view matrix in the destructor.
-     * Stage matrices are automatically adjusted to compensate.
+     * Effect matrices are automatically adjusted to compensate.
      */
     class AutoViewMatrixRestore : public ::GrNoncopyable {
     public: