Clear focus after located event is not handled

This solves the issue:
After the user taps or clicks outside the folder name, the text should
be deactivated.

Bug: 815071
Change-Id: Ic8b77fb171d16c59198ccc1112d1b5dcb07a701d
Reviewed-on: https://chromium-review.googlesource.com/951718Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Weidong Guo <weidongg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541170}

ui/app_list/views/app_list_view.cc

@@ -524,6 +524,9 @@ void AppListView::InitializeFullscreen(gfx::NativeView parent,
 }
 
 void AppListView::HandleClickOrTap(ui::LocatedEvent* event) {
+  // Clear focus if the located event is not handled by any child view.
+  GetFocusManager()->ClearFocus();
+
   // No-op if app list is on fullscreen all apps state and the event location is
   // within apps grid view's bounds.
   if (app_list_state_ == AppListViewState::FULLSCREEN_ALL_APPS &&

ui/app_list/views/folder_header_view.cc

@@ -193,13 +193,6 @@ void FolderHeaderView::Layout() {
   folder_name_view_->SetBoundsRect(text_bounds);
 }
 
-bool FolderHeaderView::OnKeyPressed(const ui::KeyEvent& event) {
-  if (event.key_code() == ui::VKEY_RETURN)
-    delegate_->GiveBackFocusToSearchBox();
-
-  return false;
-}
-
 void FolderHeaderView::ContentsChanged(views::Textfield* sender,
                                        const base::string16& new_contents) {
   // Temporarily remove from observer to ignore data change caused by us.
@@ -221,6 +214,11 @@ void FolderHeaderView::ContentsChanged(views::Textfield* sender,
 
 bool FolderHeaderView::HandleKeyEvent(views::Textfield* sender,
                                       const ui::KeyEvent& key_event) {
+  if (key_event.key_code() == ui::VKEY_RETURN &&
+      key_event.type() == ui::ET_KEY_PRESSED) {
+    delegate_->GiveBackFocusToSearchBox();
+    return true;
+  }
   if (!CanProcessLeftRightKeyTraversal(key_event))
     return false;
   return ProcessLeftRightKeyTraversalForTextfield(folder_name_view_, key_event);

ui/app_list/views/folder_header_view.h

@@ -67,7 +67,6 @@ class APP_LIST_EXPORT FolderHeaderView : public views::View,
 
   // views::View overrides:
   void Layout() override;
-  bool OnKeyPressed(const ui::KeyEvent& event) override;
 
   // views::TextfieldController overrides:
   void ContentsChanged(views::Textfield* sender,