[Chrome OS] Change layout of the launcher.

ui/app_list/search_controller.cc

Index: ui/app_list/search_controller.cc
diff --git a/ui/app_list/search_controller.cc b/ui/app_list/search_controller.cc
index 5891341544cf885ddc0f038d7ecb2785ee7fab3d..4929795b2b300211a3e4275d846b7e49265e790d 100644
--- a/ui/app_list/search_controller.cc
+++ b/ui/app_list/search_controller.cc
@@ -57,7 +57,7 @@ void SearchController::Start(bool is_voice_query) {
 
   is_voice_query_ = is_voice_query;
 
-  OnResultsChanged();
+  OnResultsChanged(query.empty());

[xiyuan, 2016/08/09 17:49:09]

We should remember empty query in a member var instead of passing it to
OnResultsChanged. Also prefer to call it query_for_recommendation_ instead of
is_empty_query_ and do it after line 58 and before this line.

[xdai1, 2016/08/09 20:14:17]

Done.

 
   stop_timer_.Start(FROM_HERE,
                     base::TimeDelta::FromMilliseconds(kStopTimeMS),
@@ -119,13 +119,12 @@ size_t SearchController::AddGroup(size_t max_results, double multiplier) {
 void SearchController::AddProvider(size_t group_id,
                                    std::unique_ptr<SearchProvider> provider) {
   provider->set_result_changed_callback(base::Bind(
-      &SearchController::OnResultsChanged,
-      base::Unretained(this)));
+      &SearchController::OnResultsChanged, base::Unretained(this), true));

[xiyuan, 2016/08/09 17:49:09]

As aforementioned, let's remember the query_for_recommendation_ and use that in
OnResultsChanged instead of binding true here.

[xdai1, 2016/08/09 20:14:17]

Done.

   mixer_->AddProviderToGroup(group_id, provider.get());
   providers_.push_back(std::move(provider));
 }
 
-void SearchController::OnResultsChanged() {
+void SearchController::OnResultsChanged(bool is_empty_query) {
   if (dispatching_query_)
     return;
 
@@ -135,7 +134,7 @@ void SearchController::OnResultsChanged() {
         ->swap(known_results);
   }
 
-  mixer_->MixAndPublish(is_voice_query_, known_results);
+  mixer_->MixAndPublish(is_empty_query, is_voice_query_, known_results);
 }
 
 }  // namespace app_list