ash: Add GetItemIndexForType() function to ShelfModel.

ash/shelf/shelf_model.cc

 // Copyright 2013 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 "ash/shelf/shelf_model.h"
 
 #include <algorithm>
 
 #include "ash/ash_switches.h"
 #include "ash/shelf/shelf_model_observer.h"
@@ skipping 113 matching lines @@
 
     Move(index, new_index);
   }
 }
 
 int ShelfModel::ItemIndexByID(LauncherID id) const {
   LauncherItems::const_iterator i = ItemByID(id);
   return i == items_.end() ? -1 : static_cast<int>(i - items_.begin());
 }
 
+int ShelfModel::GetItemIndexForType(LauncherItemType type) {
+  for (size_t i = 0; i < items_.size(); ++i) {
+    if (items_[i].type == type)
+      return i;
+  }
+  return -1;
+}
+
 LauncherItems::const_iterator ShelfModel::ItemByID(int id) const {
   for (LauncherItems::const_iterator i = items_.begin();
        i != items_.end(); ++i) {
     if (i->id == id)
       return i;
   }
   return items_.end();
 }
 
 int ShelfModel::FirstPanelIndex() const {
@@ skipping 30 matching lines @@
                                     CompareByWeight) - items_.begin(),
                    static_cast<LauncherItems::difference_type>(index));
   index = std::min(std::upper_bound(items_.begin(), items_.end(), weight_dummy,
                                     CompareByWeight) - items_.begin(),
                    static_cast<LauncherItems::difference_type>(index));
 
   return index;
 }
 
 }  // namespace ash