Display an app's short name in the app launcher

ui/app_list/views/app_list_item_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/views/app_list_item_view.h"
 
 #include <algorithm>
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/app_list/app_list_constants.h"
@@ skipping 112 matching lines @@
     gfx::ImageSkia shadow(
         gfx::ImageSkiaOperations::CreateImageWithDropShadow(resized,
                                                             icon_shadows_));
     icon_->SetImage(shadow);
     return;
   };
 
   icon_->SetImage(resized);
 }
 
+void AppListItemView::UpdateTooltip() {
+  title_->SetTooltipText(model_->title() == model_->full_name() ?
+                             string16() : UTF8ToUTF16(model_->full_name()));
+}
+
 void AppListItemView::SetUIState(UIState state) {
   if (ui_state_ == state)
     return;
 
   ui_state_ = state;
 
 #if defined(USE_AURA)
   ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
   switch (ui_state_) {
     case UI_STATE_NORMAL:
@@ skipping 43 matching lines @@
   return gfx::ImageSkia(canvas.ExtractImageRep());
 }
 
 void AppListItemView::ItemIconChanged() {
   UpdateIcon();
 }
 
 void AppListItemView::ItemTitleChanged() {
   title_->SetText(UTF8ToUTF16(model_->title()));
   title_->Invalidate();
+  UpdateTooltip();
   Layout();
 }
 
 void AppListItemView::ItemHighlightedChanged() {
   apps_grid_view_->EnsureViewVisible(this);
   SchedulePaint();
 }
 
 void AppListItemView::ItemIsInstallingChanged() {
   if (model_->is_installing())
@@ skipping 193 matching lines @@
         SetTouchDragging(false);
       break;
     default:
       break;
   }
   if (!event->handled())
     CustomButton::OnGestureEvent(event);
 }
 
 }  // namespace app_list