Cleaning up TODO(joi) entries in //net.

net/url_request/url_request_throttler_manager.h

Index: net/url_request/url_request_throttler_manager.h
diff --git a/net/url_request/url_request_throttler_manager.h b/net/url_request/url_request_throttler_manager.h
index 31d28ef3e77084d24287a9296d62ca4cef8a8c4b..ee4f9e9d84db17e6c2a161becc86f6f46c936452 100644
--- a/net/url_request/url_request_throttler_manager.h
+++ b/net/url_request/url_request_throttler_manager.h
@@ -63,12 +63,6 @@ class NET_EXPORT URLRequestThrottlerManager
   // It is only used by unit tests.
   void EraseEntryForTests(const GURL& url);
 
-  // Turns threading model verification on or off.  Any code that correctly
-  // uses the network stack should preferably call this function to enable
-  // verification of correct adherence to the network stack threading model.
-  void set_enable_thread_checks(bool enable);
-  bool enable_thread_checks() const;
-
   // Whether throttling is enabled or not.
   void set_enforce_throttling(bool enforce);
   bool enforce_throttling();
@@ -140,14 +134,6 @@ class NET_EXPORT URLRequestThrottlerManager
   // Valid after construction.
   GURL::Replacements url_id_replacements_;
 
-  // Certain tests do not obey the net component's threading policy, so we
-  // keep track of whether we're being used by tests, and turn off certain
-  // checks.
-  //
-  // TODO(joi): See if we can fix the offending unit tests and remove this
-  // workaround.
-  bool enable_thread_checks_;
-
   // Initially false, switches to true once we have logged because of back-off
   // being disabled for localhost.
   bool logged_for_localhost_disabled_;