[cros] RlzValueStore implementation for ChromeOS.

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 26 matching lines @@
 #endif
 #if !defined(RLZ_NETWORK_IMPLEMENTATION_WIN_INET) && \
     !defined(RLZ_NETWORK_IMPLEMENTATION_CHROME_NET)
 #if defined(OS_WIN)
 #define RLZ_NETWORK_IMPLEMENTATION_WIN_INET
 #else
 #define RLZ_NETWORK_IMPLEMENTATION_CHROME_NET
 #endif
 #endif
 
+#if defined(OS_CHROMEOS)
+namespace base {
+class SequencedTaskRunner;
+}  // namespace base
+#endif
+
 #if defined(RLZ_NETWORK_IMPLEMENTATION_CHROME_NET)
 namespace net {
 class URLRequestContextGetter;
 }  // namespace net
 #endif
 
 namespace rlz_lib {
 
 class ScopedRlzValueStoreLock;
 
 // The maximum length of an access points RLZ in bytes.
 const size_t kMaxRlzLength = 64;
 // The maximum length of an access points RLZ in bytes.
 const size_t kMaxDccLength = 128;
 // The maximum length of a CGI string in bytes.
 const size_t kMaxCgiLength = 2048;
 // The maximum length of a ping response we will parse in bytes. If the response
 // is bigger, please break it up into separate calls.
 const size_t kMaxPingResponseLength = 0x4000;  // 16K
 
 #if defined(RLZ_NETWORK_IMPLEMENTATION_CHROME_NET)
 // 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);
+#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);
 
 // Records an RLZ event.
 // Some events can be product-independent (e.g: First search from home page),
@@ skipping 242 matching lines @@
 
   static const std::string& GetBrand();
 
  private:
   ScopedRlzValueStoreLock* lock_;
 };
 
 }  // namespace rlz_lib
 
 #endif  // RLZ_LIB_RLZ_LIB_H_