Make callers of CommandLine use it via the base:: namespace.

chrome/browser/ui/webui/bidi_checker_web_ui_test.cc

Index: chrome/browser/ui/webui/bidi_checker_web_ui_test.cc
diff --git a/chrome/browser/ui/webui/bidi_checker_web_ui_test.cc b/chrome/browser/ui/webui/bidi_checker_web_ui_test.cc
index 6e94f87e6c9cb0f769015b24e6d918d08eda729c..79bf9197e06461e4137c5127e71d96ea9b9eea92 100644
--- a/chrome/browser/ui/webui/bidi_checker_web_ui_test.cc
+++ b/chrome/browser/ui/webui/bidi_checker_web_ui_test.cc
@@ -80,12 +80,12 @@ static const base::FilePath::CharType* kBidiCheckerTestsJS =
     FILE_PATH_LITERAL("bidichecker_tests.js");
 
 void WebUIBidiCheckerBrowserTest::SetUp() {
-  argv_ = CommandLine::ForCurrentProcess()->GetArgs();
+  argv_ = base::CommandLine::ForCurrentProcess()->GetArgs();
 }
 
 void WebUIBidiCheckerBrowserTest::TearDown() {
   // Reset command line to the way it was before the test was run.
-  CommandLine::ForCurrentProcess()->InitFromArgv(argv_);
+  base::CommandLine::ForCurrentProcess()->InitFromArgv(argv_);
 }
 
 WebUIBidiCheckerBrowserTest::~WebUIBidiCheckerBrowserTest() {}