Revert 164120 - content/browser: Move more files into the content namespace.

content/browser/cross_site_request_manager.h

Index: content/browser/cross_site_request_manager.h
===================================================================
--- content/browser/cross_site_request_manager.h	(revision 164121)
+++ content/browser/cross_site_request_manager.h	(working copy)
@@ -13,8 +13,6 @@
 
 template <typename T> struct DefaultSingletonTraits;
 
-namespace content {
-
 // CrossSiteRequestManager is used to handle bookkeeping for cross-site
 // requests and responses between the UI and IO threads.  Such requests involve
 // a transition from one RenderViewHost to another within WebContentsImpl, and
@@ -58,6 +56,4 @@
   DISALLOW_COPY_AND_ASSIGN(CrossSiteRequestManager);
 };
 
-}  // namespace content
-
 #endif  // CONTENT_BROWSER_CROSS_SITE_REQUEST_MANAGER_H_