Move CommandLine to base namespace.

content/browser/child_process_launcher.h

Index: content/browser/child_process_launcher.h
diff --git a/content/browser/child_process_launcher.h b/content/browser/child_process_launcher.h
index faa64e7ab32ef62f7d69c9f42d6cad2eb9134b0d..cc8b3f52cef20e02f2054abe2810aab3a3f8d679 100644
--- a/content/browser/child_process_launcher.h
+++ b/content/browser/child_process_launcher.h
@@ -11,7 +11,9 @@
 #include "base/process/launch.h"
 #include "content/common/content_export.h"
 
+namespace base {
 class CommandLine;
+}
 
 namespace content {
 class SandboxedProcessLauncherDelegate;
@@ -40,7 +42,7 @@ class CONTENT_EXPORT ChildProcessLauncher {
   // Takes ownership of cmd_line.
   ChildProcessLauncher(
       SandboxedProcessLauncherDelegate* delegate,
-      CommandLine* cmd_line,
+      base::CommandLine* cmd_line,
       int child_process_id,
       Client* client);
   ~ChildProcessLauncher();