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

chrome/browser/ssl/ssl_browser_tests.cc

Index: chrome/browser/ssl/ssl_browser_tests.cc
diff --git a/chrome/browser/ssl/ssl_browser_tests.cc b/chrome/browser/ssl/ssl_browser_tests.cc
index a73e9e1f7247fa27ee6e18b25db8af02b8fd0221..ff88349e796096ea08149bf0ea8735b99b40c3c6 100644
--- a/chrome/browser/ssl/ssl_browser_tests.cc
+++ b/chrome/browser/ssl/ssl_browser_tests.cc
@@ -186,7 +186,7 @@ class SSLUITest : public InProcessBrowserTest {
                             SSLOptions(SSLOptions::CERT_EXPIRED),
                             net::GetWebSocketTestDataDirectory()) {}
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     // Browser will both run and display insecure content.
     command_line->AppendSwitch(switches::kAllowRunningInsecureContent);
     // Use process-per-site so that navigating to a same-site page in a
@@ -364,7 +364,7 @@ class SSLUITestBlock : public SSLUITest {
   SSLUITestBlock() : SSLUITest() {}
 
   // Browser will neither run nor display insecure content.
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kNoDisplayingInsecureContent);
   }
 };
@@ -373,7 +373,7 @@ class SSLUITestIgnoreCertErrors : public SSLUITest {
  public:
   SSLUITestIgnoreCertErrors() : SSLUITest() {}
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     // Browser will ignore certificate errors.
     command_line->AppendSwitch(switches::kIgnoreCertificateErrors);
   }