Monitor crashpad_handler for crashes [sometimes]

components/crash/content/app/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 COMPONENTS_CRASH_CONTENT_APP_CRASH_REPORTER_CLIENT_H_
 #define COMPONENTS_CRASH_CONTENT_APP_CRASH_REPORTER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 161 matching lines @@
 
   // Returns the file descriptor of the pipe used to inform apps of
   // webview renderer crashes.
   virtual int GetAndroidCrashSignalFD();
 
   // Returns true if breakpad microdumps should be enabled. This orthogonal to
   // the standard minidump uploader (which depends on the user consent).
   virtual bool ShouldEnableBreakpadMicrodumps();
 #endif
 
+#if defined(OS_MACOSX) || defined(OS_WIN)
+  // This method should return true to configure a crash reporter capable of
+  // monitoring itself for its own crashes to do so, even if self-monitoring
+  // would be expensive. "Expensive" self-monitoring dedicates an additional
+  // crash handler process to handle the crashes of the initial crash handler
+  // process.
+  //
+  // In some cases, inexpensive self-monitoring may also be available. When it
+  // is, it may be used when this method returns false. If only expensive
+  // self-monitoring is available, returning false from this function will
+  // prevent the crash handler process from being monitored for crashes at all.
+  //
+  // The default implementation returns false.
+  virtual bool ShouldMonitorCrashHandlerExpensively();
+#endif
+
   // Returns true if breakpad should run in the given process type.
   virtual bool EnableBreakpadForProcess(const std::string& process_type);
 };
 
 }  // namespace crash_reporter
 
 #endif  // COMPONENTS_CRASH_CONTENT_APP_CRASH_REPORTER_CLIENT_H_