Re-land r93365 - add RefCountedString

chrome/browser/history/top_sites.cc

Index: chrome/browser/history/top_sites.cc
diff --git a/chrome/browser/history/top_sites.cc b/chrome/browser/history/top_sites.cc
index 1c6f67f9e1353806ed56411a564ac73384c3d336..efd2f8d117e0beb64794237916b23b9d0570f073 100644
--- a/chrome/browser/history/top_sites.cc
+++ b/chrome/browser/history/top_sites.cc
@@ -605,8 +605,9 @@ bool TopSites::EncodeBitmap(const SkBitmap& bitmap,
     return false;
   }
   // As we're going to cache this data, make sure the vector is only as big as
-  // it needs to be.
-  (*bytes)->data = data;
+  // it needs to be, as JPEGCodec::Encode() over-allocates data.capacity().
+  // (In a C++0x future, we can just call shrink_to_fit() in Encode())
+  (*bytes)->data() = data;
   return true;
 }