[Profiles] Update legacy default profile names.

chrome/browser/profiles/profile_info_cache.cc

Index: chrome/browser/profiles/profile_info_cache.cc
diff --git a/chrome/browser/profiles/profile_info_cache.cc b/chrome/browser/profiles/profile_info_cache.cc
index 8aaa047c963dfd8f409d9fe59c13bb508ecdfc4b..c5ba808526041b4c849bc0f019910fbe1f3b63e9 100644
--- a/chrome/browser/profiles/profile_info_cache.cc
+++ b/chrome/browser/profiles/profile_info_cache.cc
@@ -169,13 +169,10 @@ ProfileInfoCache::ProfileInfoCache(PrefService* prefs,
     }
   }
 
-  // If needed, start downloading the high-res avatars.
-  if (switches::IsNewAvatarMenu()) {
-    for (size_t i = 0; i < GetNumberOfProfiles(); i++) {
-      DownloadHighResAvatar(GetAvatarIconIndexOfProfileAtIndex(i),
-                            GetPathOfProfileAtIndex(i));
-    }
-  }
+  // If needed, start downloading the high-res avatars and migrate any legacy
+  // profile names.
+  if (switches::IsNewAvatarMenu())
+    MigrateLegacyProfileNamesAndDownloadAvatars();
 }
 
 ProfileInfoCache::~ProfileInfoCache() {
@@ -1067,3 +1064,45 @@ void ProfileInfoCache::OnAvatarPictureSaved(
   delete avatar_images_downloads_in_progress_[file_name];
   avatar_images_downloads_in_progress_[file_name] = NULL;
 }
+
+void ProfileInfoCache::MigrateLegacyProfileNamesAndDownloadAvatars() {
+  DCHECK(switches::IsNewAvatarMenu());
+
+  // Only do this on desktop platforms.
+#if !defined(OS_ANDROID) && !defined(OS_IOS) && !defined(OS_CHROMEOS)
+  // Migrate any legacy profile names ("First user", "Default Profile") to
+  // new style default names ("Person 1"). The problem here is that every
+  // time you rename a profile, the ProfileInfoCache sorts itself, so
+  // whatever you were iterating through is no longer valid. We need to
+  // save a list of the profile paths (which thankfully do not change) that
+  // need to be renamed. We also can't pre-compute the new names, as they
+  // depend on the names of all the other profiles in the info cache, so they
+  // need to be re-computed after each rename.
+  std::vector<base::FilePath> profiles_to_rename;
+
+  const base::string16 default_profile_name = base::i18n::ToLower(
+      l10n_util::GetStringUTF16(IDS_DEFAULT_PROFILE_NAME));
+  const base::string16 default_legacy_profile_name = base::i18n::ToLower(
+      l10n_util::GetStringUTF16(IDS_LEGACY_DEFAULT_PROFILE_NAME));
+
+  for (size_t i = 0; i < GetNumberOfProfiles(); i++) {
+    // If needed, start downloading the high-res avatar for this profile.
+    DownloadHighResAvatar(GetAvatarIconIndexOfProfileAtIndex(i),
+                          GetPathOfProfileAtIndex(i));
+
+    base::string16 name = base::i18n::ToLower(GetNameOfProfileAtIndex(i));
+    if (name == default_profile_name || name == default_legacy_profile_name)
+      profiles_to_rename.push_back(GetPathOfProfileAtIndex(i));
+  }
+
+  // Rename the necessary profiles.
+  std::vector<base::FilePath>::const_iterator it;
+  for (it = profiles_to_rename.begin(); it != profiles_to_rename.end(); ++it) {
+    size_t profile_index = GetIndexOfProfileWithPath(*it);
+    SetProfileIsUsingDefaultNameAtIndex(profile_index, true);
+    // This will assign a new "Person %d" type name and re-sort the cache.
+    SetNameOfProfileAtIndex(profile_index, ChooseNameForNewProfile(
+        GetAvatarIconIndexOfProfileAtIndex(profile_index)));
+  }
+#endif
+}