Revert 207763 "Merge https://src.chromium.org/viewvc/chrome?revi..."

branches/1500/src/net/url_request/url_request_context.h

Index: branches/1500/src/net/url_request/url_request_context.h
===================================================================
--- branches/1500/src/net/url_request/url_request_context.h	(revision 207763)
+++ branches/1500/src/net/url_request/url_request_context.h	(working copy)
@@ -47,8 +47,7 @@
 // these member variables, since they may be shared. For the ones that aren't
 // shared, URLRequestContextStorage can be helpful in defining their storage.
 class NET_EXPORT URLRequestContext
-    : NON_EXPORTED_BASE(public base::NonThreadSafe),
-      public base::SupportsWeakPtr<URLRequestContext> {
+    : NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   URLRequestContext();
   virtual ~URLRequestContext();