Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/chromeos/system_logs/touch_log_source.cc

Index: chrome/browser/chromeos/system_logs/touch_log_source.cc
diff --git a/chrome/browser/chromeos/system_logs/touch_log_source.cc b/chrome/browser/chromeos/system_logs/touch_log_source.cc
index 307dd0de9b019a684cd4d3aa9e00b17c3f74a1b8..cb36f71c2b5f93d55fbe9fbae7520bb6f8002ff1 100644
--- a/chrome/browser/chromeos/system_logs/touch_log_source.cc
+++ b/chrome/browser/chromeos/system_logs/touch_log_source.cc
@@ -19,7 +19,7 @@ namespace {
 const char kHUDLogDataKey[] = "hud_log";
 
 void GetTouchLogs(system_logs::SystemLogsResponse* response) {
-  scoped_ptr<DictionaryValue> dictionary =
+  scoped_ptr<base::DictionaryValue> dictionary =
       ash::internal::TouchHudDebug::GetAllAsDictionary();
   if (!dictionary->empty()) {
     std::string touch_log;