Give user the ability to disable the URL request throttler:...

net/url_request/url_request_throttler_manager.h

Index: net/url_request/url_request_throttler_manager.h
===================================================================
--- net/url_request/url_request_throttler_manager.h	(revision 69995)
+++ net/url_request/url_request_throttler_manager.h	(working copy)
@@ -49,6 +49,12 @@
   // It is only used by unit tests.
   void EraseEntryForTests(const GURL& url);
 
+  void set_enforce_throttling(bool enforce_throttling) {
+    enforce_throttling_ = enforce_throttling;
+  }
+
+  bool enforce_throttling() const { return enforce_throttling_; }
+
  protected:
   URLRequestThrottlerManager();
   ~URLRequestThrottlerManager();
@@ -93,6 +99,10 @@
 
   mutable scoped_ptr<GURL::Replacements> url_id_replacements_;
 
+  // Whether we would like to reject outgoing HTTP requests during the back-off
+  // period.
+  bool enforce_throttling_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerManager);
 };