[cros,rlz] Financial ping livelock fix and proper shutdown.

rlz/lib/rlz_lib.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.
 //
 // A library to manage RLZ information for access-points shared
 // across different client applications.
 //
 // All functions return true on success and false on error.
 // This implemenation is thread safe.
 
@@ skipping 63 matching lines @@
 // Set the URLRequestContextGetter used by SendFinancialPing(). The IO message
 // loop returned by this context will be used for the IO done by
 // SendFinancialPing().
 bool RLZ_LIB_API SetURLRequestContext(net::URLRequestContextGetter* context);
 #endif
 
 #if defined(OS_CHROMEOS)
 // Set the MessageLoopProxy used by RLZ store to run I/O tasks on. Should be
 // called before any other API calls.
 void RLZ_LIB_API SetIOTaskRunner(base::SequencedTaskRunner* io_task_runner);
+
+// Must be invoked during shutdown to finish any remaining tasks.
+void RLZ_LIB_API CleanupRlz();
 #endif
 
 // RLZ storage functions.
 
 // Get all the events reported by this product as a CGI string to append to
 // the daily ping.
 // Access: HKCU read.
 bool RLZ_LIB_API GetProductEventsAsCgi(Product product, char* unescaped_cgi,
                                        size_t unescaped_cgi_size);
 
@@ skipping 244 matching lines @@
 
   static const std::string& GetBrand();
 
  private:
   ScopedRlzValueStoreLock* lock_;
 };
 
 }  // namespace rlz_lib
 
 #endif  // RLZ_LIB_RLZ_LIB_H_