Update uses of Value in chromeos/, cloud_print/, components/, content/ to use the base:: namespace.

components/policy/core/common/policy_service.cc

Index: components/policy/core/common/policy_service.cc
diff --git a/components/policy/core/common/policy_service.cc b/components/policy/core/common/policy_service.cc
index fe4bb3037ce48cd4e1fbd21c344396ac8d755460..8ba3da206ed802e7bfd45e222f0f49277c394edf 100644
--- a/components/policy/core/common/policy_service.cc
+++ b/components/policy/core/common/policy_service.cc
@@ -32,8 +32,8 @@ void PolicyChangeRegistrar::OnPolicyUpdated(const PolicyNamespace& ns,
     return;
   for (CallbackMap::iterator it = callback_map_.begin();
        it != callback_map_.end(); ++it) {
-    const Value* prev = previous.GetValue(it->first);
-    const Value* cur = current.GetValue(it->first);
+    const base::Value* prev = previous.GetValue(it->first);
+    const base::Value* cur = current.GetValue(it->first);
     if (!base::Value::Equals(prev, cur))
       it->second.Run(prev, cur);
   }