Remove GrIsPow2 in favor of SkIsPow2.

include/gpu/GrTypes.h

Index: include/gpu/GrTypes.h
diff --git a/include/gpu/GrTypes.h b/include/gpu/GrTypes.h
index 34f4e2827d9b818af8059570cce78978658a329f..519ad0fbca14e84ebd50d0021affb1aaa679b8b7 100644
--- a/include/gpu/GrTypes.h
+++ b/include/gpu/GrTypes.h
@@ -151,13 +151,6 @@ static inline size_t GrSizeAlignDown(size_t x, uint32_t alignment) {
 ///////////////////////////////////////////////////////////////////////////////
 
 /**
- *  Return true if n is a power of 2
- */
-static inline bool GrIsPow2(unsigned n) {
-    return n && 0 == (n & (n - 1));

[scroggo, 2014/06/09 14:40:56]

Not sure whether it makes a difference to any of the callers, but this does
slightly change the behavior: GrIsPow2 returns false for 0, but SkIsPow2 returns
true.

-}
-
-/**
  *  Return the next power of 2 >= n.
  */
 static inline uint32_t GrNextPow2(uint32_t n) {