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

content/browser/site_per_process_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/site_per_process_browsertest.h"
 
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
@@ skipping 222 matching lines @@
       NOTIFICATION_NAV_ENTRY_COMMITTED,
       Source<NavigationController>(
           &window->web_contents()->GetController()));
   if (!ExecuteScript(window->web_contents(), script))
     return false;
   load_observer.Wait();
 
   return true;
 }
 
-void SitePerProcessBrowserTest::SetUpCommandLine(CommandLine* command_line) {
+void SitePerProcessBrowserTest::SetUpCommandLine(
+    base::CommandLine* command_line) {
   command_line->AppendSwitch(switches::kSitePerProcess);
 };
 
 void SitePerProcessBrowserTest::SetUpOnMainThread() {
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
   SetupCrossSiteRedirector(embedded_test_server());
 }
 
 // Ensure that navigating subframes in --site-per-process mode works and the
@@ skipping 846 matching lines @@
   params.frame_tree_node_id = child->frame_tree_node_id();
   child->navigator()->GetController()->LoadURLWithParams(params);
   nav_observer.Wait();
 
   // Verify that the navigation succeeded and the expected URL was loaded.
   EXPECT_TRUE(observer.navigation_succeeded());
   EXPECT_EQ(url, observer.navigation_url());
 }
 
 }  // namespace content