Use the DefaultSearchManager as the exclusive authority on DSE, ignoring Web Data.

chrome/browser/profile_resetter/automatic_profile_resetter_delegate.h

 // Copyright 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_AUTOMATIC_PROFILE_RESETTER_DELEGATE_H_
 #define CHROME_BROWSER_PROFILE_RESETTER_AUTOMATIC_PROFILE_RESETTER_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 48 matching lines @@
   // default settings have been downloaded, or once it has been established that
   // we are running a vanilla (non-branded) build.
   virtual void RequestCallbackWhenBrandcodedDefaultsAreFetched(
       const base::Closure& ready_callback) const = 0;
 
   // Returns a list of loaded module name digests.
   virtual scoped_ptr<base::ListValue> GetLoadedModuleNameDigests() const = 0;
 
   // Returns attributes of the search engine currently set as the default (or
   // an empty dictionary if there is none).
-  // The returned attributes correspond in meaning and format to the user
-  // preferences stored by TemplateURLService::SaveDefaultSearchProviderToPrefs,
-  // and will be named after the second path name segment of the respective
-  // preference (i.e. the part after "default_search_provider.").
-  // Note that:
-  //  1.) the "enabled" attribute will not be present, as it is not technically
-  //      an attribute of a search provider,
-  //  2.) "encodings" will be a list of strings, in contrast to a single string
-  //      with tokens delimited by semicolons, but the order will be the same.
+  // The dictionary is in the same format as persisted to preferences by
+  // DefaultSearchManager::SetUserSelectedDefaultSearchEngine.
   virtual scoped_ptr<base::DictionaryValue>
       GetDefaultSearchProviderDetails() const = 0;
 
   // Returns whether or not the default search provider is set by policy.
   virtual bool IsDefaultSearchProviderManaged() const = 0;
 
   // Returns a list of dictionaries, each containing attributes for each of the
   // pre-populated search engines, in the format described above.
   virtual scoped_ptr<base::ListValue>
       GetPrepopulatedSearchProvidersDetails() const = 0;
@@ skipping 123 matching lines @@
   extensions::OneShotEvent template_url_service_ready_event_;
 
   // This event is signaled once brandcoded default settings have been fetched,
   // or once it has been established that this is not a branded build.
   extensions::OneShotEvent brandcoded_defaults_fetched_event_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomaticProfileResetterDelegateImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILE_RESETTER_AUTOMATIC_PROFILE_RESETTER_DELEGATE_H_