Revert recent changes to base::Value

chrome/renderer/extensions/extension_process_bindings.cc

Index: chrome/renderer/extensions/extension_process_bindings.cc
diff --git a/chrome/renderer/extensions/extension_process_bindings.cc b/chrome/renderer/extensions/extension_process_bindings.cc
index 077c524d14a334b03242d2d4eef89240150335ef..d96743cc9298ed88d9403869523f2d681120cdc1 100644
--- a/chrome/renderer/extensions/extension_process_bindings.cc
+++ b/chrome/renderer/extensions/extension_process_bindings.cc
@@ -467,12 +467,12 @@ class ExtensionImpl : public ExtensionBase {
 
     // Since we do the serialization in the v8 extension, we should always get
     // valid JSON.
-    if (!value_args.get() || !value_args->AsList()) {
+    if (!value_args.get() || !value_args->IsType(Value::TYPE_LIST)) {
       NOTREACHED() << "Invalid JSON passed to StartRequest.";
       return v8::Undefined();
     }
 
-    return StartRequestCommon(args, value_args->AsList());
+    return StartRequestCommon(args, static_cast<ListValue*>(value_args.get()));
   }
 
   static bool ConvertImageDataToBitmapValue(