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

content/browser/frame_host/navigation_controller_impl.cc

Index: content/browser/frame_host/navigation_controller_impl.cc
diff --git a/content/browser/frame_host/navigation_controller_impl.cc b/content/browser/frame_host/navigation_controller_impl.cc
index 9519f3f1399f0b158cc78f07c680588561d6c0d9..c3408808e45036327cf1ff7cdcb9fefcab76f3e2 100644
--- a/content/browser/frame_host/navigation_controller_impl.cc
+++ b/content/browser/frame_host/navigation_controller_impl.cc
@@ -655,7 +655,7 @@ void NavigationControllerImpl::LoadURLWithParams(const LoadURLParams& params) {
   if (HandleDebugURL(params.url, params.transition_type)) {
     // If Telemetry is running, allow the URL load to proceed as if it's
     // unhandled, otherwise Telemetry can't tell if Navigation completed.
-    if (!CommandLine::ForCurrentProcess()->HasSwitch(
+    if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
             cc::switches::kEnableGpuBenchmarking))
       return;
   }