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

chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc

Index: chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc
diff --git a/chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc b/chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc
index 6ef19ff8d8598b6f48ccce1a4dcc9be92394d974..3d7802292c939790bc631b9ac03b1aea9e34045f 100644
--- a/chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc
+++ b/chrome/browser/guest_view/web_view/context_menu_content_type_web_view.cc
@@ -40,10 +40,10 @@ bool ContextMenuContentTypeWebView::SupportsGroup(int group) {
         // Add dev tools for unpacked extensions.
         const extensions::Extension* embedder_platform_app = GetExtension();
         return !embedder_platform_app ||
-            extensions::Manifest::IsUnpackedLocation(
-                embedder_platform_app->location()) ||
-            CommandLine::ForCurrentProcess()->HasSwitch(
-                switches::kDebugPackedApps);
+               extensions::Manifest::IsUnpackedLocation(
+                   embedder_platform_app->location()) ||
+               base::CommandLine::ForCurrentProcess()->HasSwitch(
+                   switches::kDebugPackedApps);
       }
 #else
       return ContextMenuContentType::SupportsGroup(group);