Move remaining files in content\browser to the content namespace.

content/browser/child_process_security_policy_impl.h

Index: content/browser/child_process_security_policy_impl.h
===================================================================
--- content/browser/child_process_security_policy_impl.h	(revision 164795)
+++ content/browser/child_process_security_policy_impl.h	(working copy)
@@ -19,8 +19,10 @@
 class FilePath;
 class GURL;
 
+namespace content {
+
 class CONTENT_EXPORT ChildProcessSecurityPolicyImpl
-    : NON_EXPORTED_BASE(public content::ChildProcessSecurityPolicy) {
+    : NON_EXPORTED_BASE(public ChildProcessSecurityPolicy) {
  public:
   // Object can only be created through GetInstance() so the constructor is
   // private.
@@ -207,4 +209,6 @@
   DISALLOW_COPY_AND_ASSIGN(ChildProcessSecurityPolicyImpl);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_BROWSER_CHILD_PROCESS_SECURITY_POLICY_IMPL_H_