Re-land 125247: Better error messages when using unsupported manifest features.

chrome/common/extensions/extension_constants.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/common/extensions/extension_constants.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 158 matching lines @@
 const char kChromeVersionTooLow[] =
     "This extension requires * version * or greater.";
 const char kDisabledByPolicy[] =
     "This extension has been disabled by your administrator.";
 const char kExpectString[] = "Expect string value.";
 const char kExperimentalFlagRequired[] =
     "Loading extensions with 'experimental' permission is turned off by "
     "default. You can enable 'Experimental Extension APIs' "
     "by visiting chrome://flags.";
 const char kFeatureNotAllowed[] =
-    "Feature '*' is not allowed in this type of manifest.";
+    "Feature '*' is not accessible. *";
 const char kInvalidAllFrames[] =
     "Invalid value for 'content_scripts[*].all_frames'.";
 const char kInvalidBackground[] =
     "Invalid value for 'background_page'.";
 const char kInvalidBackgroundAllowJsAccess[] =
     "Invalid value for 'background.allow_js_access'.";
 const char kInvalidBackgroundAllowJsAccessNoPage[] =
     "Must specify one of background.page or background.scripts to use"
     " background.allow_js_access.";
 const char kInvalidBackgroundCombination[] =
@@ skipping 352 matching lines @@
 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
 
 }