Change HistoryAndBookmarkRow favicon_ field to be scoped_refptr<base::RefCountedMemory>

chrome/browser/history/android/android_history_types.h

Index: chrome/browser/history/android/android_history_types.h
diff --git a/chrome/browser/history/android/android_history_types.h b/chrome/browser/history/android/android_history_types.h
index ea56399a10994d57140f85bc77416efdfa3b7e5a..843f465e53eb2ea0ee004a5fa46cc972bbdb9598 100644
--- a/chrome/browser/history/android/android_history_types.h
+++ b/chrome/browser/history/android/android_history_types.h
@@ -117,14 +117,18 @@ class HistoryAndBookmarkRow {
   }
 
   // The favicon related to page if any.
-  void set_favicon(const std::vector<unsigned char>& data) {
+  void set_favicon(const scoped_refptr<base::RefCountedMemory>& data) {
     set_value_explicitly(FAVICON);
     favicon_ = data;
   }
-  const std::vector<unsigned char>& favicon() const {
+  const scoped_refptr<base::RefCountedMemory>& favicon() const {
     return favicon_;
   }
 
+  bool favicon_valid() const {
+    return favicon_.get() && favicon_->size();
+  }
+
   // The id of android url.
   void set_id(AndroidURLID id) {
     set_value_explicitly(ID);
@@ -168,7 +172,7 @@ class HistoryAndBookmarkRow {
   string16 title_;
   base::Time created_;
   base::Time last_visit_time_;
-  std::vector<unsigned char> favicon_;
+  scoped_refptr<base::RefCountedMemory> favicon_;
   int visit_count_;
   bool is_bookmark_;
   int64 parent_id_;