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

content/child/npapi/plugin_host.cc

Index: content/child/npapi/plugin_host.cc
diff --git a/content/child/npapi/plugin_host.cc b/content/child/npapi/plugin_host.cc
index 30adea04f7c64340ef86b635badb7ad3c68f08a6..c2d68aa70c7ab1ad6f45165b4d6c1fdcd291834c 100644
--- a/content/child/npapi/plugin_host.cc
+++ b/content/child/npapi/plugin_host.cc
@@ -54,8 +54,8 @@ static PluginInstance* FindInstance(NPP id) {
 // OS supports shared accelerated surfaces via IOSurface. This is true on Snow
 // Leopard and higher.
 static bool SupportsCoreAnimationPlugins() {
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableCoreAnimationPlugins))
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableCoreAnimationPlugins))
     return false;
   // We also need to be running with desktop GL and not the software
   // OSMesa renderer in order to share accelerated surfaces between