Part two of fallback crash handler for Crashpad handler process.

components/crash/content/app/fallback_crash_handler_win.h

Index: components/crash/content/app/fallback_crash_handler_win.h
diff --git a/components/crash/content/app/fallback_crash_handler_win.h b/components/crash/content/app/fallback_crash_handler_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..d9e96bb4b262523f43f46be1ab3f9dc1b3c2a23f
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+++ b/components/crash/content/app/fallback_crash_handler_win.h
@@ -0,0 +1,60 @@
+// Copyright 2017 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_FALLBACK_CRASH_HANDLER_WIN_H_
+#define COMPONENTS_CRASH_CONTENT_APP_FALLBACK_CRASH_HANDLER_WIN_H_
+
+#include <windows.h>
+
+#include "base/command_line.h"
+#include "base/files/file_path.h"
+#include "base/macros.h"
+#include "base/process/process.h"
+#include "base/threading/platform_thread.h"
+
+namespace crash_reporter {
+
+// In the fallback crash handler, this invokes the system crash machinery
+// (MiniDumpWriteDump) to generate the crash report, then adds the report to
+// the Crashpad database for upload.
+class FallbackCrashHandler {
+ public:
+  FallbackCrashHandler();
+  ~FallbackCrashHandler();
+
+  // Parses |cmd_line| for the following arguments:
+  // --database=<path>
+  //   Path to the Crashpad database where the minidump will be stored.
+  // --exception-pointers=<address>
+  //   Address of exception pointers in the crashed process.
+  // --process=<handle>
+  //   Handle to the process to dump.
+  // --thread=<id>
+  //   ID of the crashing thread.
+  bool ParseCommandLine(const base::CommandLine& cmd_line);
+
+  // Generates a crashdump with Crashpad properties containing:
+  // prod: |product|
+  // ver: |version|
+  // channel: |cannel|
+  // plat: "Win32" or "Win64", depending on bitness.
+  // ptype: |process_type|.
+  bool GenerateCrashDump(const std::string& product,
+                         const std::string& version,
+                         const std::string& channel,
+                         const std::string& process_type);
+
+ private:
+  base::Process process_;
+  base::PlatformThreadId thread_id_;
+  // This is a pointer in process_, which is hopefully not this process.
+  uintptr_t exception_ptrs_;
+  base::FilePath database_dir_;
+
+  DISALLOW_COPY_AND_ASSIGN(FallbackCrashHandler);
+};
+
+}  // namespace crash_reporter
+
+#endif  // COMPONENTS_CRASH_CONTENT_APP_FALLBACK_CRASH_HANDLER_WIN_H_