Fix Android build.

Review URL: http://codereview.chromium.org/545153

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3671 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/serialize.h

@@ -147,7 +147,7 @@ class SnapshotByteSource {
     return position_ == length_;
   }
 
-  const int position() { return position_; }
+  int position() { return position_; }
 
  private:
   const byte* data_;