Revert of CHECK that URLRequestJobs are not orphaned while blocked by extensions.

extensions/browser/api/web_request/web_request_api.cc

Index: extensions/browser/api/web_request/web_request_api.cc
diff --git a/extensions/browser/api/web_request/web_request_api.cc b/extensions/browser/api/web_request/web_request_api.cc
index 33616986882c26ad23ae7afcf88338c3875cb35b..d1a14dd5b5a0050d0f2b9141caf7e58f6364c880 100644
--- a/extensions/browser/api/web_request/web_request_api.cc
+++ b/extensions/browser/api/web_request/web_request_api.cc
@@ -8,7 +8,6 @@
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
-#include "base/debug/alias.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ -1227,20 +1226,6 @@ void ExtensionWebRequestEventRouter::OnURLRequestDestroyed(
                                            base::Time::Now());
 }
 
-void ExtensionWebRequestEventRouter::OnURLRequestJobOrphaned(
-    void* browser_context,
-    const net::URLRequest* request) {
-  // See https://crbug.com/289715. While a URLRequest is blocking on an
-  // extension, it may not orphan jobs unless OnURLRequestDestroyed is called
-  // first.
-  //
-  // TODO(davidben): Remove this when the crash has been diagnosed.
-  char url_buf[128];
-  base::strlcpy(url_buf, request->url().spec().c_str(), arraysize(url_buf));
-  base::debug::Alias(url_buf);
-  CHECK_EQ(0u, blocked_requests_.count(request->identifier()));
-}
-
 void ExtensionWebRequestEventRouter::ClearPendingCallbacks(
     const net::URLRequest* request) {
   blocked_requests_.erase(request->identifier());