First pass at experimental omnibox API. There are plenty of rough edges and

chrome/browser/views/location_bar/selected_keyword_view.cc

 // Copyright (c) 2010 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/views/location_bar/selected_keyword_view.h"
 
 #include "app/l10n_util.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
+#include "chrome/browser/search_engines/template_url_model.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/views/location_bar/keyword_hint_view.h"
 #include "grit/generated_resources.h"
 
 SelectedKeywordView::SelectedKeywordView(const int background_images[],
                                          int contained_image,
                                          const SkColor& color,
                                          Profile* profile)
     : IconLabelBubbleView(background_images, contained_image, color),
       profile_(profile) {
@@ skipping 29 matching lines @@
 }
 
 void SelectedKeywordView::SetKeyword(const std::wstring& keyword) {
   keyword_ = keyword;
   if (keyword.empty())
     return;
   DCHECK(profile_);
   if (!profile_->GetTemplateURLModel())
     return;
 
-  const std::wstring short_name =
-      KeywordHintView::GetKeywordName(profile_, keyword);
-  full_label_.SetText(l10n_util::GetStringF(IDS_OMNIBOX_KEYWORD_TEXT,
-                                            short_name));
+  bool is_extension_keyword;
+  const std::wstring short_name = profile_->GetTemplateURLModel()->
+      GetKeywordShortName(keyword, &is_extension_keyword);
+  int message_id = is_extension_keyword ?
+      IDS_OMNIBOX_EXTENSION_KEYWORD_TEXT : IDS_OMNIBOX_KEYWORD_TEXT;
+  full_label_.SetText(l10n_util::GetStringF(message_id, short_name));
   const std::wstring min_string = CalculateMinString(short_name);
   partial_label_.SetText(min_string.empty() ?
       full_label_.GetText() :
-      l10n_util::GetStringF(IDS_OMNIBOX_KEYWORD_TEXT, min_string));
+      l10n_util::GetStringF(message_id, min_string));
 }
 
 std::wstring SelectedKeywordView::CalculateMinString(
     const std::wstring& description) {
   // Chop at the first '.' or whitespace.
   const size_t dot_index = description.find(L'.');
   const size_t ws_index = description.find_first_of(kWhitespaceWide);
   size_t chop_index = std::min(dot_index, ws_index);
   std::wstring min_string;
   if (chop_index == std::wstring::npos) {
     // No dot or whitespace, truncate to at most 3 chars.
     min_string = l10n_util::TruncateString(description, 3);
   } else {
     min_string = description.substr(0, chop_index);
   }
   base::i18n::AdjustStringForLocaleDirection(min_string, &min_string);
   return min_string;
 }