Make Crashpad use the user data dir, rather than always default location

chrome/app/chrome_main_delegate.h

 // Copyright (c) 2011 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_MAIN_DELEGATE_H_
 #define CHROME_APP_CHROME_MAIN_DELEGATE_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_content_client.h"
 #include "content/public/app/content_main_delegate.h"
 
 template <typename>
 class ScopedVector;
 
 namespace base {
 class CommandLine;
 }
 
+// Exposed for testing.
+void InitializeUserDataDir(base::CommandLine* command_line);
+
 // Chrome implementation of ContentMainDelegate.
 class ChromeMainDelegate : public content::ContentMainDelegate {
  public:
   ChromeMainDelegate();
 
   // |exe_entry_point_ticks| is the time at which the main function of the
   // executable was entered, or null if not available.
   explicit ChromeMainDelegate(base::TimeTicks exe_entry_point_ticks);
   ~ChromeMainDelegate() override;
 
@@ skipping 28 matching lines @@
                             const std::string& process_type);
   void SetUpInstallerPreferences(const base::CommandLine& command_line);
 #endif  // defined(OS_MACOSX)
 
   ChromeContentClient chrome_content_client_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMainDelegate);
 };
 
 #endif  // CHROME_APP_CHROME_MAIN_DELEGATE_H_