Always clear previous playstore results.

Previously, if Suggested Content was disabled, old results would still
appear in the cache. This change ensures that results cache is always
cleared.

Change-Id: If9e09c95e65ff9b731195da5832803ee7505d956
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2264182Reviewed-by: Jia Meng <jiameng@chromium.org>
Commit-Queue: Rachel Wong <wrong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782221}

chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.cc

@@ -102,6 +102,10 @@ ash::AppListSearchResultType ArcPlayStoreSearchProvider::ResultType() {
 }
 
 void ArcPlayStoreSearchProvider::Start(const base::string16& query) {
+  last_query_ = query;
+  // Clear any results from the previous query.
+  ClearResultsSilently();
+
   // Always check if suggested content is enabled before searching for play
   // store apps.
   PrefService* pref_service = profile_->GetPrefs();
@@ -114,11 +118,6 @@ void ArcPlayStoreSearchProvider::Start(const base::string16& query) {
       return;
   }
 
-  last_query_ = query;
-
-  // Clear any results from the previous query.
-  ClearResultsSilently();
-
   arc::mojom::AppInstance* app_instance =
       arc::ArcServiceManager::Get()
           ? ARC_GET_INSTANCE_FOR_METHOD(