Improve error message for insecure 'content_security_policy' manifest entries.

chrome/common/extensions/extension_manifest_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_manifest_constants.h"
 
 namespace extension_manifest_keys {
 
 const char kAllFrames[] = "all_frames";
 const char kAltKey[] = "altKey";
@@ skipping 434 matching lines @@
 const char kInvalidWebAccessibleResourcesList[] =
     "Invalid value for 'web_accessible_resources'.";
 const char kInvalidWebAccessibleResource[] =
     "Invalid value for 'web_accessible_resources[*]'.";
 const char kInvalidWebURL[] =
     "Invalid value for 'app.urls[*]': *";
 const char kInvalidWebURLs[] =
     "Invalid value for 'app.urls'.";
 const char kInvalidZipHash[] =
     "Required key 'zip_hash' is missing or invalid.";
+const char kInsecureContentSecurityPolicy[] =
+    "Invalid value for 'content_security_policy': 'script-src' and 'object-src'"
+    " can only contain secure resources. You may whitelist HTTPS origins,"
+    " \"chrome-extension:\" resources, \"'self'\", http://127.0.0.1, and"
+    " http://localhost).";

[abarth-chromium, 2012/08/27 06:51:57]

It's confusing when you're using single and when you're using double quotes,
especially with 'self' needing the single quotes...  I'm not sure what to
suggest to improve this given that many of the other messages using single
quotes as well.

 const char kLaunchPathAndExtentAreExclusive[] =
     "The 'app.launch.local_path' and 'app.urls' keys cannot both be set.";
 const char kLaunchPathAndURLAreExclusive[] =
     "The 'app.launch.local_path' and 'app.launch.web_url' keys cannot "
     "both be set.";
 const char kLaunchURLRequired[] =
     "Either 'app.launch.local_path' or 'app.launch.web_url' is required.";
 const char kLocalesMessagesFileMissing[] =
     "Messages file is missing for locale.";
 const char kLocalesNoDefaultLocaleSpecified[] =
@@ skipping 30 matching lines @@
 const char kScriptBadgeTitleIgnored[] =
     "default_title specified in script_badge manifest section will not be "
     "used.";
 const char kWebRequestConflictsWithLazyBackground[] =
     "The 'webRequest' API cannot be used with event pages.";
 #if defined(OS_CHROMEOS)
 const char kIllegalPlugins[] =
     "Extensions cannot install plugins on Chrome OS";
 #endif
 }  // namespace extension_manifest_errors