Convert most of extensions and some other random stuff to using the base namespace for Values.

chrome/browser/extensions/api/serial/serial_apitest.cc

Index: chrome/browser/extensions/api/serial/serial_apitest.cc
diff --git a/chrome/browser/extensions/api/serial/serial_apitest.cc b/chrome/browser/extensions/api/serial/serial_apitest.cc
index 9b1d8dd41a829467f0bbba40b70f39a6360342ef..646dfd157ff12ccbd88fc013986f8470688ac20c 100644
--- a/chrome/browser/extensions/api/serial/serial_apitest.cc
+++ b/chrome/browser/extensions/api/serial/serial_apitest.cc
@@ -36,7 +36,7 @@ namespace extensions {
 class FakeSerialGetPortsFunction : public AsyncExtensionFunction {
  public:
   virtual bool RunImpl() OVERRIDE {
-    ListValue* ports = new ListValue();
+    base::ListValue* ports = new base::ListValue();
     ports->Append(Value::CreateStringValue("/dev/fakeserial"));
     ports->Append(Value::CreateStringValue("\\\\COM800\\"));
     SetResult(ports);