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

content/browser/frame_host/render_frame_host_manager_unittest.cc

 // Copyright 2013 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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
@@ skipping 1812 matching lines @@
     contents()->GetMainFrame()->OnMessageReceived(
         FrameHostMsg_BeforeUnload_ACK(0, false, now, now));
     EXPECT_FALSE(contents()->cross_navigation_pending());
     EXPECT_FALSE(rfh_deleted_observer.deleted());
   }
 }
 
 // Test that a pending RenderFrameHost in a non-root frame tree node is properly
 // deleted when the node is detached. Motivated by http://crbug.com/441357
 TEST_F(RenderFrameHostManagerTest, DetachPendingChild) {
-  CommandLine::ForCurrentProcess()->AppendSwitch(switches::kSitePerProcess);
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kSitePerProcess);
 
   const GURL kUrl1("http://www.google.com/");
   const GURL kUrl2("http://webkit.org/");
 
   RenderFrameHostImpl* host = NULL;
 
   contents()->NavigateAndCommit(kUrl1);
   contents()->GetMainFrame()->OnCreateChildFrame(
       contents()->GetMainFrame()->GetProcess()->GetNextRoutingID(),
       std::string("frame_name"));
@@ skipping 58 matching lines @@
 #if 0
   // TODO(nick): Currently a proxy to the removed frame lingers in the parent.
   // Enable this assert below once the proxies to the subframe are correctly
   // cleaned up after detach.
   ASSERT_TRUE(site_instance->HasOneRef())
       << "This SiteInstance should be destroyable now.";
 #endif
 }
 
 }  // namespace content