Enable Client ID generation on Linux/OS X. Enables UMA logging.

chrome/browser/metrics/metrics_service.cc

 // Copyright (c) 2006-2009 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.
 
 
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
@@ skipping 745 matching lines @@
   GUID guid;
   HRESULT guid_result = CoCreateGuid(&guid);
   DCHECK(SUCCEEDED(guid_result));
 
   std::wstring guid_string;
   int result = StringFromGUID2(guid,
                                WriteInto(&guid_string, kGUIDSize), kGUIDSize);
   DCHECK(result == kGUIDSize);
 
   return WideToUTF8(guid_string.substr(1, guid_string.length() - 2));
-#elif defined(LINUX2)
+#else
   uint64 sixteen_bytes[2] = { base::RandUint64(), base::RandUint64() };
   return RandomBytesToGUIDString(sixteen_bytes);
-#else
-  // TODO(cmasone): enable the above for all OS_POSIX platforms once the
-  // first-run dialog text is all up to date.
-  NOTIMPLEMENTED();
-  return std::string();
 #endif
 }
 
 #if defined(OS_POSIX)
 // TODO(cmasone): Once we're comfortable this works, migrate Windows code to
 // use this as well.
 std::string MetricsService::RandomBytesToGUIDString(const uint64 bytes[2]) {
   return StringPrintf("%08llX-%04llX-%04llX-%04llX-%012llX",
                       bytes[0] >> 32,
                       (bytes[0] >> 16) & 0x0000ffff,
@@ skipping 1137 matching lines @@
       L"." + key;
   prof_prefs->SetInteger(pref_key.c_str(), value);
 }
 
 static bool IsSingleThreaded() {
   static PlatformThreadId thread_id = 0;
   if (!thread_id)
     thread_id = PlatformThread::CurrentId();
   return PlatformThread::CurrentId() == thread_id;
 }