Add base namespace to more values in sync and elsewhere.

sync/internal_api/public/base/invalidation.cc

Index: sync/internal_api/public/base/invalidation.cc
diff --git a/sync/internal_api/public/base/invalidation.cc b/sync/internal_api/public/base/invalidation.cc
index f5f6168b2fac8eaa9e35bfd91ead215cb0622c94..472fad2c3c3f2c1d78f0f1a1d348dbfa6bc60aba 100644
--- a/sync/internal_api/public/base/invalidation.cc
+++ b/sync/internal_api/public/base/invalidation.cc
@@ -33,7 +33,7 @@ bool AckHandle::Equals(const AckHandle& other) const {
 }
 
 scoped_ptr<base::DictionaryValue> AckHandle::ToValue() const {
-  scoped_ptr<DictionaryValue> value(new DictionaryValue());
+  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
   value->SetString("state", state_);
   value->SetString("timestamp",
                    base::Int64ToString(timestamp_.ToInternalValue()));
@@ -76,14 +76,14 @@ bool Invalidation::Equals(const Invalidation& other) const {
 }
 
 scoped_ptr<base::DictionaryValue> Invalidation::ToValue() const {
-  scoped_ptr<DictionaryValue> value(new DictionaryValue());
+  scoped_ptr<base::DictionaryValue> value(new base::DictionaryValue());
   value->SetString("payload", payload);
   value->Set("ackHandle", ack_handle.ToValue().release());
   return value.Pass();
 }
 
 bool Invalidation::ResetFromValue(const base::DictionaryValue& value) {
-  const DictionaryValue* ack_handle_value = NULL;
+  const base::DictionaryValue* ack_handle_value = NULL;
   return
       value.GetString("payload", &payload) &&
       value.GetDictionary("ackHandle", &ack_handle_value) &&