Remove mojo:: part of mojo::shell:: nested namespace in //shell.

shell/filename_util.h

Index: shell/filename_util.h
diff --git a/shell/filename_util.h b/shell/filename_util.h
index 28d0e780a9910576e031f0b578d81318a152277e..2652215d654855f621c3fc89b19668735a2ed856 100644
--- a/shell/filename_util.h
+++ b/shell/filename_util.h
@@ -11,7 +11,6 @@ namespace base {
 class FilePath;
 }
 
-namespace mojo {
 namespace shell {
 
 // Given the full path to a file name, creates a file: URL. The returned URL
@@ -23,6 +22,5 @@ GURL FilePathToFileURL(const base::FilePath& path);
 GURL AddTrailingSlashIfNeeded(const GURL& url);
 
 }  // namespace shell
-}  // namespace mojo
 
 #endif  // SHELL_FILENAME_UTIL_H_