Use whether a query is from the app list to determine the RLZ parameter.

chrome/browser/search_engines/search_terms_data_android.cc

 // Copyright 2012 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.
 
 #include "chrome/browser/search_engines/search_terms_data_android.h"
 
 #include "chrome/browser/search_engines/search_terms_data.h"
 #include "content/public/browser/browser_thread.h"
 
 base::LazyInstance<base::string16>::Leaky
     SearchTermsDataAndroid::rlz_parameter_value_ = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<std::string>::Leaky
     SearchTermsDataAndroid::search_client_ = LAZY_INSTANCE_INITIALIZER;
 
-base::string16 UIThreadSearchTermsData::GetRlzParameterValue() const {
+base::string16 UIThreadSearchTermsData::GetRlzParameterValue(
+    bool from_app_list) const {
   DCHECK(!content::BrowserThread::IsThreadInitialized(
              content::BrowserThread::UI) ||
          content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   // Android doesn't use the rlz library.  Instead, it manages the rlz string
   // on its own.
   return SearchTermsDataAndroid::rlz_parameter_value_.Get();
 }
 
 std::string UIThreadSearchTermsData::GetSearchClient() const {
   DCHECK(!content::BrowserThread::IsThreadInitialized(
              content::BrowserThread::UI) ||
          content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   return SearchTermsDataAndroid::search_client_.Get();
 }