Rename extension_manifest_keys namespace to extensions::manifest_keys.

chrome/browser/extensions/convert_web_app.cc

Index: chrome/browser/extensions/convert_web_app.cc
diff --git a/chrome/browser/extensions/convert_web_app.cc b/chrome/browser/extensions/convert_web_app.cc
index 5f844aba93fe6c56cdd8cd5d67cb59b7d42a5836..38685e7cb17d4b89004c8155c9de64e0cc9d8b49 100644
--- a/chrome/browser/extensions/convert_web_app.cc
+++ b/chrome/browser/extensions/convert_web_app.cc
@@ -22,17 +22,17 @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_file_util.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/web_application_info.h"
 #include "crypto/sha2.h"
 #include "extensions/common/constants.h"
+#include "extensions/common/manifest_constants.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "url/gurl.h"
 
 namespace extensions {
 
-namespace keys = extension_manifest_keys;
+namespace keys = manifest_keys;
 
 using base::Time;
 
@@ -57,8 +57,7 @@ std::string GenerateKey(const GURL& manifest_url) {
   return key;
 }
 
-}
-
+}  // namespace
 
 // Generates a version for the converted app using the current date. This isn't
 // really needed, but it seems like useful information.