Enable UMA reporting for crashpad_handler on macOS

chrome/app/chrome_crash_reporter_client.h

 // Copyright 2013 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 CHROME_APP_CHROME_CRASH_REPORTER_CLIENT_H_
 #define CHROME_APP_CHROME_CRASH_REPORTER_CLIENT_H_
 
 #if !defined(OS_WIN)
 
 #include <stddef.h>
@@ skipping 17 matching lines @@
 #endif
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   void GetProductNameAndVersion(const char** product_name,
                                 const char** version) override;
   base::FilePath GetReporterLogFilename() override;
 #endif
 
   bool GetCrashDumpLocation(base::FilePath* crash_dir) override;
 
+#if defined(OS_MACOSX)
+  bool GetCrashMetricsLocation(base::FilePath* metrics_dir) override;
+#endif
+
   size_t RegisterCrashKeys() override;
 
   bool IsRunningUnattended() override;
 
   bool GetCollectStatsConsent() override;
 
 #if defined(OS_MACOSX)
   bool ReportingIsEnforcedByPolicy(bool* breakpad_enabled) override;
 #endif
 
 #if defined(OS_ANDROID)
   int GetAndroidMinidumpDescriptor() override;
 #endif
 
   bool EnableBreakpadForProcess(const std::string& process_type) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeCrashReporterClient);
 };
 
 #endif  // OS_WIN
 
 #endif  // CHROME_APP_CHROME_CRASH_REPORTER_CLIENT_H_