Initial inline web store install bindings.

chrome/common/extensions/extension_constants.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_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #pragma once
 
+#include <string>
+
 #include "base/basictypes.h"
 
 // Keys used in JSON representation of extensions.
 namespace extension_manifest_keys {
   extern const char* kAllFrames;
   extern const char* kAltKey;
   extern const char* kApp;
   extern const char* kBackground;
   extern const char* kBrowserAction;
   extern const char* kBrowseURLs;
@@ skipping 390 matching lines @@
     INSTALL_CAUSE_EXTERNAL_FILE,
     INSTALL_CAUSE_AUTOMATION,
     NUM_INSTALL_CAUSES
   };
 
   enum UnloadedExtensionReason {
     UNLOAD_REASON_DISABLE,    // Extension is being disabled.
     UNLOAD_REASON_UPDATE,     // Extension is being updated to a newer version.
     UNLOAD_REASON_UNINSTALL,  // Extension is being uninstalled.
   };
+
+  // Returns the URL prefix for the extension/apps gallery. Can be set via the
+  // --apps-gallery-url switch. The URL returned will not contain a trailing
+  // slash. Do not use this as a prefix/extent for the store.  Instead see
+  // ExtensionService::GetWebStoreApp or
+  // ExtensionService::IsDownloadFromGallery
+  std::string GetWebstoreLaunchURL();
+
+  // Returns the URL prefix for an item in the extension/app gallery. This URL
+  // will contain a trailing slash and should be concatenated with an item ID
+  // to get the item detail URL.
+  std::string GetWebstoreItemDetailURLPrefix();
 }  // extension_misc
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_