restore LOG_FATAL crash key on windows

components/crash/core/common/crash_keys.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_CRASH_CORE_COMMON_CRASH_KEYS_H_
 #define COMPONENTS_CRASH_CORE_COMMON_CRASH_KEYS_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 74 matching lines @@
 // The product release/distribution channel.
 extern const char kChannel[];
 
 // The total number of experiments the instance has.
 extern const char kNumVariations[];
 
 // The experiments chunk. Hashed experiment names separated by |,|. This is
 // typically set by SetExperimentList.
 extern const char kVariations[];
 
+// The last fatal log message.
+extern const char kLogFatal[];
+
 // The maximum number of command line switches to process. |kSwitchFormat|
 // should be formatted with an integer in the range [1, kSwitchesMaxCount].
 const size_t kSwitchesMaxCount = 15;
 
 // A printf-style format string naming the set of crash keys corresponding to
 // at most |kSwitchesMaxCount| command line switches.
 extern const char kSwitchFormat[];
 
 // The total number of switches, used to report the total in case more than
 // |kSwitchesMaxCount| are present.
 extern const char kNumSwitches[];
 
 // Used to help investigate bug 464926.
 extern const char kBug464926CrashKey[];
 
 #if defined(OS_MACOSX)
 namespace mac {
 
 // Records Cocoa zombie/used-after-freed objects that resulted in a
 // deliberate crash.
 extern const char kZombie[];
 extern const char kZombieTrace[];
 
 }  // namespace mac
 #endif
 
 }  // namespace crash_keys
 
 #endif  // COMPONENTS_CRASH_CORE_COMMON_CRASH_KEYS_H_