Drop refs to net::EmbeddedTestServer / net::File{Path,URL} utils in mojo

mojo/shell/mojo_url_resolver.cc

Index: mojo/shell/mojo_url_resolver.cc
diff --git a/mojo/shell/mojo_url_resolver.cc b/mojo/shell/mojo_url_resolver.cc
index c399854905e348b84ff7d0a074e853d7e23fa551..4566a167dc730bec1b28bb9a867255d557a10ba1 100644
--- a/mojo/shell/mojo_url_resolver.cc
+++ b/mojo/shell/mojo_url_resolver.cc
@@ -8,7 +8,7 @@
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
-#include "net/base/filename_util.h"
+#include "mojo/shell/filename_util.h"
 #include "url/url_util.h"
 
 namespace mojo {
@@ -47,7 +47,7 @@ MojoURLResolver::MojoURLResolver() {
   // By default, resolve mojo URLs to files living alongside the shell.
   base::FilePath path;
   PathService::Get(base::DIR_MODULE, &path);
-  default_base_url_ = AddTrailingSlashIfNeeded(net::FilePathToFileURL(path));
+  default_base_url_ = AddTrailingSlashIfNeeded(FilePathToFileURL(path));
 }
 
 MojoURLResolver::~MojoURLResolver() {