Add an experimental permissions API for extensions.

chrome/common/extensions/extension_constants.cc

 // 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.
 
 #include "chrome/common/extensions/extension_constants.h"
 
 namespace extension_manifest_keys {
 
 const char* kAllFrames = "all_frames";
 const char* kAltKey = "altKey";
@@ skipping 32 matching lines @@
 const char* kLaunchWidth = "app.launch.width";
 const char* kLayouts = "layouts";
 const char* kMatches = "matches";
 const char* kMinimumChromeVersion = "minimum_chrome_version";
 const char* kName = "name";
 const char* kNaClModules = "nacl_modules";
 const char* kNaClModulesMIMEType = "mime_type";
 const char* kNaClModulesPath = "path";
 const char* kOmnibox = "omnibox";
 const char* kOmniboxKeyword = "omnibox.keyword";
+const char* kOptionalPermissions = "optional_permissions";
 const char* kOptionsPage = "options_page";
 const char* kPageAction = "page_action";
 const char* kPageActionDefaultIcon = "default_icon";
 const char* kPageActionDefaultPopup = "default_popup";
 const char* kPageActionDefaultTitle = "default_title";
 const char* kPageActionIcons = "icons";
 const char* kPageActionId = "id";
 const char* kPageActionPopup = "popup";
 const char* kPageActionPopupHeight = "height";
 const char* kPageActionPopupPath = "path";
@@ skipping 355 matching lines @@
 const char* kWebStoreAppId = "ahfgeienlihckogmohjhadlkjgocpleb";
 const char* kCloudPrintAppId = "mfehgcgbbipciphmccgaenjidiccnmng";
 const char* kAppsPromoHistogram = "Extensions.AppsPromo";
 const char* kAppLaunchHistogram = "Extensions.AppLaunch";
 #if defined(OS_CHROMEOS)
 const char* kAccessExtensionPath =
     "/usr/share/chromeos-assets/accessibility/extensions";
 const char* kChromeVoxDirectoryName = "access_chromevox";
 #endif
 }