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

content/common/gpu/image_transport_surface.cc

Index: content/common/gpu/image_transport_surface.cc
diff --git a/content/common/gpu/image_transport_surface.cc b/content/common/gpu/image_transport_surface.cc
index f4c5a68cb218b02b354c2612ec7f3b18b4e89b63..f0665f6696a0a6b2efc5922d945c260f16797d1f 100644
--- a/content/common/gpu/image_transport_surface.cc
+++ b/content/common/gpu/image_transport_surface.cc
@@ -145,7 +145,8 @@ void ImageTransportHelper::SetSwapInterval(gfx::GLContext* context) {
     return;
   }
 #endif
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableGpuVsync))
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableGpuVsync))
     context->ForceSwapIntervalZero(true);
   else
     context->SetSwapInterval(1);