Use base::StringPairs where appropriate from src/chrome/browser

chrome/browser/profile_resetter/resettable_settings_snapshot.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PROFILE_RESETTER_RESETTABLE_SETTINGS_SNAPSHOT_H_
 #define CHROME_BROWSER_PROFILE_RESETTER_RESETTABLE_SETTINGS_SNAPSHOT_H_
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/strings/string_split.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profile_resetter/profile_resetter.h"
 
 namespace base {
 class ListValue;
 }
 
 // ResettableSettingsSnapshot captures some settings values at constructor. It
 // can calculate the difference between two snapshots. That is, modified fields.
 class ResettableSettingsSnapshot {
  public:
   // ExtensionList is a vector of pairs. The first component is the extension
   // id, the second is the name.
-  typedef std::vector<std::pair<std::string, std::string> > ExtensionList;
+  typedef base::StringPairs ExtensionList;
   // All types of settings handled by this class.
   enum Field {
     STARTUP_MODE = 1 << 0,
     HOMEPAGE = 1 << 1,
     DSE_URL = 1 << 2,
     EXTENSIONS = 1 << 3,
     SHORTCUTS = 1 << 4,
 
     ALL_FIELDS = STARTUP_MODE | HOMEPAGE | DSE_URL | EXTENSIONS | SHORTCUTS,
   };
@@ skipping 92 matching lines @@
                           Profile* profile,
                           SnapshotCaller caller);
 
 // Returns list of key/value pairs for all available reported information
 // from the |profile| and some additional fields.
 scoped_ptr<base::ListValue> GetReadableFeedbackForSnapshot(
     Profile* profile,
     const ResettableSettingsSnapshot& snapshot);
 
 #endif  // CHROME_BROWSER_PROFILE_RESETTER_RESETTABLE_SETTINGS_SNAPSHOT_H_