Implement a simple Extension App Omnibox provider.

chrome/browser/autocomplete/autocomplete.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 25 matching lines @@
 // their own thread management when they need to return matches asynchronously.
 //
 // The AutocompleteProviders each return different kinds of matches, such as
 // history or search matches.  These matches are given "relevance" scores.
 // Higher scores are better matches than lower scores.  The relevance scores and
 // classes providing the respective matches are as follows:
 //
 // UNKNOWN input type:
 // --------------------------------------------------------------------|-----
 // Keyword (non-substituting or in keyword UI mode, exact match)       | 1500
+// Extension App (exact match)                                         | 1200 ?

[mrossetti, 2011/03/31 16:44:17]

Driveby: Should be sorted into the rest of the list properly.

[Finnur, 2011/03/31 22:25:20]

Will do, once we figure out the right value... 1200 is a test value.

On 2011/03/31 16:44:17, mrossetti wrote:

 // HistoryURL (exact or inline autocomplete match)                     | 1400
 // Search Primary Provider (past query in history within 2 days)       | 1399**
 // Search Primary Provider (what you typed)                            | 1300
 // HistoryURL (what you typed)                                         | 1200
 // Keyword (substituting, exact match)                                 | 1100
 // Search Primary Provider (past query in history older than 2 days)   | 1050--
 // HistoryContents (any match in title of starred page)                | 1000++
 // HistoryURL (inexact match)                                          |  900++
 // Search Primary Provider (navigational suggestion)                   |  800++
 // HistoryContents (any match in title of nonstarred page)             |  700++
@@ skipping 662 matching lines @@
   AutocompleteInput::Type input_type;
   // Selected index (if selected) or -1 (AutocompletePopupModel::kNoMatch).
   size_t selected_index;
   // Inline autocompleted length (if displayed).
   size_t inline_autocompleted_length;
   // Result set.
   const AutocompleteResult& result;
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_H_