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

chrome/browser/devtools/port_forwarding_controller.cc

Index: chrome/browser/devtools/port_forwarding_controller.cc
diff --git a/chrome/browser/devtools/port_forwarding_controller.cc b/chrome/browser/devtools/port_forwarding_controller.cc
index a733851ced2a219cb70da651eb1a6551171da441..627030eaad37573f2641f3c83f0c564555f38038 100644
--- a/chrome/browser/devtools/port_forwarding_controller.cc
+++ b/chrome/browser/devtools/port_forwarding_controller.cc
@@ -358,9 +358,10 @@ void PortForwardingController::Connection::OnPrefsChange() {
   bool enabled =
       pref_service->GetBoolean(prefs::kDevToolsPortForwardingEnabled);
   if (enabled) {
-    const DictionaryValue* dict =
+    const base::DictionaryValue* dict =
         pref_service->GetDictionary(prefs::kDevToolsPortForwardingConfig);
-    for (DictionaryValue::Iterator it(*dict); !it.IsAtEnd(); it.Advance()) {
+    for (base::DictionaryValue::Iterator it(*dict);
+         !it.IsAtEnd(); it.Advance()) {
       int port_num;
       std::string location;
       if (base::StringToInt(it.key(), &port_num) &&
@@ -541,7 +542,7 @@ bool PortForwardingController::Connection::ProcessIncomingMessage(
   if (notification->method() != kTetheringAccepted)
     return false;
 
-  DictionaryValue* params = notification->params();
+  base::DictionaryValue* params = notification->params();
   if (!params)
     return false;