Revert recent changes to base::Value

chrome/browser/chromeos/cros/network_parser.h

Index: chrome/browser/chromeos/cros/network_parser.h
diff --git a/chrome/browser/chromeos/cros/network_parser.h b/chrome/browser/chromeos/cros/network_parser.h
index a06a792686c923af6d1a2bb686cceca8a5a84edb..9181551421036776ee7e0a25e89d287feb7a1851 100644
--- a/chrome/browser/chromeos/cros/network_parser.h
+++ b/chrome/browser/chromeos/cros/network_parser.h
@@ -83,17 +83,16 @@ class NetworkDeviceParser {
   virtual bool UpdateDeviceFromInfo(const DictionaryValue& info,
                                     NetworkDevice* device);
   virtual bool UpdateStatus(const std::string& key,
-                            Value* value,
+                            const Value& value,
                             NetworkDevice* device,
                             PropertyIndex* index);
-
  protected:
   // The NetworkDeviceParser does not take ownership of the |mapper|.
   explicit NetworkDeviceParser(const EnumMapper<PropertyIndex>* mapper);
   virtual ~NetworkDeviceParser();
 
   virtual bool ParseValue(PropertyIndex index,
-                          Value* value,
+                          const Value& value,
                           NetworkDevice* device) = 0;
   virtual ConnectionType ParseType(const std::string& type) = 0;
 
@@ -126,7 +125,7 @@ class NetworkParser {
   // property index for the given key.  |index| is filled in even if
   // the update fails.  Returns false upon failure.
   virtual bool UpdateStatus(const std::string& key,
-                            Value* value,
+                            const Value& value,
                             Network* network,
                             PropertyIndex* index);
  protected:
@@ -135,7 +134,7 @@ class NetworkParser {
   virtual ~NetworkParser();
 
   virtual bool ParseValue(PropertyIndex index,
-                          Value* value,
+                          const Value& value,
                           Network* network) = 0;
   virtual ConnectionType ParseType(const std::string& type) = 0;
   virtual ConnectionType ParseTypeFromDictionary(