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

chrome/browser/ui/toolbar/toolbar_model_unittest.cc

Index: chrome/browser/ui/toolbar/toolbar_model_unittest.cc
diff --git a/chrome/browser/ui/toolbar/toolbar_model_unittest.cc b/chrome/browser/ui/toolbar/toolbar_model_unittest.cc
index 241ddcc0c124122430cf3be2fdd28adae37adc11..1dc0ac2a5c9b148ea53b46e3dfe68ab72290069a 100644
--- a/chrome/browser/ui/toolbar/toolbar_model_unittest.cc
+++ b/chrome/browser/ui/toolbar/toolbar_model_unittest.cc
@@ -364,8 +364,8 @@ TEST_F(ToolbarModelTest, GoogleBaseURL) {
   // The same URL, when specified on the command line, should allow search term
   // extraction.
   UIThreadSearchTermsData::SetGoogleBaseURL(std::string());
-  CommandLine::ForCurrentProcess()->AppendSwitchASCII(switches::kGoogleBaseURL,
-                                                      "http://www.foo.com/");
+  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+      switches::kGoogleBaseURL, "http://www.foo.com/");
   NavigateAndCheckText(
       GURL("http://www.foo.com/search?q=tractor+supply&espv=1"),
       base::ASCIIToUTF16("tractor supply"), true, true);