[Extensions Toolbar] Component extensions default to the front of the toolbar

chrome/browser/extensions/extension_toolbar_model.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 "chrome/browser/extensions/extension_toolbar_model.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 300 matching lines @@
   // See if we have a last known good position for this extension.
   bool is_new_extension =
       std::find(last_known_positions_.begin(),
                 last_known_positions_.end(),
                 extension->id()) == last_known_positions_.end();
 
   // New extensions go at the right (end) of the visible extensions. Other
   // extensions go at their previous position.
   size_t new_index = 0;
   if (is_new_extension) {
-    new_index = visible_icon_count();
+    new_index = Manifest::IsComponentLocation(extension->location()) ?
+        0 : visible_icon_count();
     // For the last-known position, we use the index of the extension that is
     // just before this extension, plus one. (Note that this isn't the same
     // as new_index + 1, because last_known_positions_ can include disabled
     // extensions.)
     int new_last_known_index =
         new_index == 0 ? 0 :
         std::find(last_known_positions_.begin(),
                   last_known_positions_.end(),
                   toolbar_items_[new_index - 1]->id()) -
             last_known_positions_.begin() + 1;
@@ skipping 401 matching lines @@
   if (is_highlighting_) {
     highlighted_items_.clear();
     is_highlighting_ = false;
     if (old_visible_icon_count_ != visible_icon_count_)
       SetVisibleIconCount(old_visible_icon_count_);
     FOR_EACH_OBSERVER(Observer, observers_, ToolbarHighlightModeChanged(false));
   }
 }
 
 }  // namespace extensions