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

chrome/browser/extensions/api/management/management_api.cc

Index: chrome/browser/extensions/api/management/management_api.cc
diff --git a/chrome/browser/extensions/api/management/management_api.cc b/chrome/browser/extensions/api/management/management_api.cc
index 26ce8d038f15d29fba31df0f4eb578f0bab926a3..76f308c930b6a4fe8c2588f482cbbdaa38a5ff64 100644
--- a/chrome/browser/extensions/api/management/management_api.cc
+++ b/chrome/browser/extensions/api/management/management_api.cc
@@ -323,9 +323,9 @@ class SafeManifestJSONParser : public UtilityProcessHostClient {
 
   void OnJSONParseSucceeded(const base::ListValue& wrapper) {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-    const Value* value = NULL;
+    const base::Value* value = NULL;
     CHECK(wrapper.Get(0, &value));
-    if (value->IsType(Value::TYPE_DICTIONARY))
+    if (value->IsType(base::Value::TYPE_DICTIONARY))
       parsed_manifest_.reset(
           static_cast<const base::DictionaryValue*>(value)->DeepCopy());
     else