[Mac] Log stack trace for CHECK in bug 97285.

base/mac/crash_logging.h

 // Copyright (c) 2012 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 BASE_MAC_CRASH_LOGGING_H_
 #define BASE_MAC_CRASH_LOGGING_H_
 
 #include "base/base_export.h"
 
 #if __OBJC__
@@ skipping 14 matching lines @@
 BASE_EXPORT void SetCrashKeyFunctions(SetCrashKeyValueFuncPtr set_key_func,
                           ClearCrashKeyValueFuncPtr clear_key_func);
 
 // Set and clear meta information for Minidump.
 // IMPORTANT: On OS X, the key/value pairs are sent to the crash server
 // out of bounds and not recorded on disk in the minidump, this means
 // that if you look at the minidump file locally you won't see them!
 BASE_EXPORT void SetCrashKeyValue(NSString* key, NSString* val);
 BASE_EXPORT void ClearCrashKey(NSString* key);
 
+// Format |count| items from |addresses| using %p, and set the
+// resulting string as value for crash key |key|.  A maximum of 23
+// items will be encoded, since breakpad limits values to 255 bytes.
+BASE_EXPORT void SetCrashKeyFromAddresses(NSString* key,
+                                          const void* const* addresses,
+                                          size_t count);
+
 #if __OBJC__
 
 class BASE_EXPORT ScopedCrashKey {
  public:
   ScopedCrashKey(NSString* key, NSString* value);
   ~ScopedCrashKey();
  private:
   scoped_nsobject<NSString> crash_key_;
   DISALLOW_COPY_AND_ASSIGN(ScopedCrashKey);
 };
 
 #endif  // __OBJC__
 
 }  // namespace mac
 }  // namespace base
 
 #endif  // BASE_MAC_CRASH_LOGGING_H_