Add the Play Store app search to the launcher.

chrome/browser/ui/app_list/search/search_controller_factory.cc

Index: chrome/browser/ui/app_list/search/search_controller_factory.cc
diff --git a/chrome/browser/ui/app_list/search/search_controller_factory.cc b/chrome/browser/ui/app_list/search/search_controller_factory.cc
index b0d21a3b1c2e7e45f901b98c894530bc6b369cf2..dfa37ec648e4876edff6a48dd28ffcae9b56a110 100644
--- a/chrome/browser/ui/app_list/search/search_controller_factory.cc
+++ b/chrome/browser/ui/app_list/search/search_controller_factory.cc
@@ -28,6 +28,10 @@
 #include "ui/app_list/search/mixer.h"
 #include "ui/app_list/search_controller.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/ui/app_list/search/arc/arc_playstore_search_provider.h"
+#endif
+
 namespace app_list {
 
 namespace {
@@ -38,6 +42,9 @@ constexpr size_t kMaxOmniboxResults = 4;
 constexpr size_t kMaxWebstoreResults = 2;
 constexpr size_t kMaxSuggestionsResults = 6;
 constexpr size_t kMaxLauncherSearchResults = 2;
+#if defined(OS_CHROMEOS)
+constexpr size_t kMaxPlayStoreResults = 2;
+#endif
 
 // Constants related to the SuggestionsService in AppList field trial.
 constexpr char kSuggestionsProviderFieldTrialName[] =
@@ -113,6 +120,13 @@ std::unique_ptr<SearchController> CreateSearchController(
                             base::MakeUnique<LauncherSearchProvider>(profile));
   }
 
+#if defined(OS_CHROMEOS)
+  size_t playstore_api_group_id =
+      controller->AddGroup(kMaxPlayStoreResults, 1.0);
+  controller->AddProvider(playstore_api_group_id,
+                          base::MakeUnique<ArcPlayStoreSearchProvider>(
+                              kMaxPlayStoreResults, profile, list_controller));
+#endif
   return controller;
 }