Issue 5013 - Make parameter const ref when applicable.

test/FilterEngine.cpp

Index: test/FilterEngine.cpp
===================================================================
--- a/test/FilterEngine.cpp
+++ b/test/FilterEngine.cpp
@@ -61,17 +61,17 @@
 
   typedef FilterEngineTestGeneric<LazyFileSystem, AdblockPlus::DefaultLogSystem> FilterEngineTest;
   typedef FilterEngineTestGeneric<VeryLazyFileSystem, LazyLogSystem> FilterEngineTestNoData;
 
   struct MockFilterChangeCallback
   {
     MockFilterChangeCallback(int& timesCalled) : timesCalled(timesCalled) {}
 
-    void operator()(const std::string&, const AdblockPlus::JsValuePtr)
+    void operator()(const std::string&, const AdblockPlus::JsValue&)
     {
       timesCalled++;
     }
 
   private:
     int& timesCalled;
   };
 
@@ -1087,9 +1087,9 @@
     auto subscription = EnsureExampleSubscriptionAndForceUpdate("subB");
     EXPECT_EQ("synchronize_ok", subscription->GetProperty("downloadStatus")->AsString());
     EXPECT_EQ(1u, subscription->GetProperty("filters")->AsList().size());
     auto capturedConnectionTypes = this->capturedConnectionTypes.GetStrings();
     ASSERT_EQ(1u, capturedConnectionTypes.size());
     EXPECT_TRUE(capturedConnectionTypes[0].first);
     EXPECT_EQ(testConnection, capturedConnectionTypes[0].second);
   }
-}
+}