Revert "Add DumpWithoutCrashing and crash keys to get more context"

content/browser/child_process_security_policy_impl.h

Index: content/browser/child_process_security_policy_impl.h
diff --git a/content/browser/child_process_security_policy_impl.h b/content/browser/child_process_security_policy_impl.h
index 025eb502651d27569a4b525fecd49627a07a338f..2f2b8100b8c68b4b07d6ad4870939250ddaf063d 100644
--- a/content/browser/child_process_security_policy_impl.h
+++ b/content/browser/child_process_security_policy_impl.h
@@ -6,12 +6,10 @@
 #define CONTENT_BROWSER_CHILD_PROCESS_SECURITY_POLICY_IMPL_H_
 
 #include <map>
-#include <memory>
 #include <set>
 #include <string>
 
 #include "base/compiler_specific.h"
-#include "base/debug/crash_logging.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
@@ -79,10 +77,6 @@ class CONTENT_EXPORT ChildProcessSecurityPolicyImpl
   void GrantSendMidiSysExMessage(int child_id) override;
   bool CanAccessDataForOrigin(int child_id, const GURL& url) override;
 
-  // TODO(nick): Remove this once we understand http://crbug.com/600441
-  std::unique_ptr<base::debug::ScopedCrashKey> GetOriginLockCrashKey(
-      int child_id);
-
   // Pseudo schemes are treated differently than other schemes because they
   // cannot be requested like normal URLs.  There is no mechanism for revoking
   // pseudo schemes.