Move the rest of extension_manifest_constants to top-level extensions/

chrome/common/extensions/message_bundle.cc

Index: chrome/common/extensions/message_bundle.cc
diff --git a/chrome/common/extensions/message_bundle.cc b/chrome/common/extensions/message_bundle.cc
index 24ceff9d39f4e46e7f7c1a0614f6dcc83bee2bfa..9a5f4b035265f3640257b938c60a1b2d9e6d982c 100644
--- a/chrome/common/extensions/message_bundle.cc
+++ b/chrome/common/extensions/message_bundle.cc
@@ -17,14 +17,14 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension_l10n_util.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "extensions/common/error_utils.h"
+#include "extensions/common/manifest_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 
-namespace errors = extension_manifest_errors;
-
 namespace extensions {
 
+namespace errors = manifest_errors;
+
 const char* MessageBundle::kContentKey = "content";
 const char* MessageBundle::kMessageKey = "message";
 const char* MessageBundle::kPlaceholdersKey = "placeholders";