Store default search provider data in dictionary pref.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 31f79af935bbbb9c248e1510a72ac1aadaa890c2..ffef8d7e95eb0716ad9e54952d767d8eb4f63430 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -334,6 +334,12 @@ const char kConfirmToQuitEnabled[] = "browser.confirm_to_quit";
 // 2 - block all cookies
 const char kCookieBehavior[] = "security.cookie_behavior";
 
+// A dictionary to hold all data related to the Default Search Engine.
+// Eventually, this should replace all the data stored in the
+// default_search_provider.* prefs below.
+const char kDefaultSearchProviderData[] =
+    "default_search_provider.template_url_data";
+
 // The GUID of the synced default search provider. Note that this acts like a
 // pointer to which synced search engine should be the default, rather than the
 // prefs below which describe the locally saved default search provider details