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

chrome/browser/search_engines/search_terms_data_android.cc

Index: chrome/browser/search_engines/search_terms_data_android.cc
diff --git a/chrome/browser/search_engines/search_terms_data_android.cc b/chrome/browser/search_engines/search_terms_data_android.cc
index 916014a9482cebf425316442deda156398b42cb1..cde096084f47e169f872c9e0f32e2f8014b7070e 100644
--- a/chrome/browser/search_engines/search_terms_data_android.cc
+++ b/chrome/browser/search_engines/search_terms_data_android.cc
@@ -12,7 +12,8 @@ base::LazyInstance<base::string16>::Leaky
 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));