Simplified JsEngine API, Call() and GetVariable() aren`t reallynecessary if Evaluate() returns a v…

test/JsEngine.cpp

Index: test/JsEngine.cpp
===================================================================
--- a/test/JsEngine.cpp
+++ b/test/JsEngine.cpp
@@ -45,27 +45,27 @@ public:
 
 TEST(JsEngineTest, EvaluateAndCall)
 {
   ThrowingFileReader fileReader;
   ThrowingErrorCallback errorCallback;
   AdblockPlus::JsEngine jsEngine(&fileReader, 0, &errorCallback);
   const std::string source = "function hello() { return 'Hello'; }";
   jsEngine.Evaluate(source);
-  const std::string result = jsEngine.Call("hello");
+  const std::string result = jsEngine.Evaluate("hello()");
   ASSERT_EQ("Hello", result);
 }
 
 TEST(JsEngineTest, LoadAndCall)
 {
   StubFileReader fileReader;
   ThrowingErrorCallback errorCallback;
   AdblockPlus::JsEngine jsEngine(&fileReader, 0, &errorCallback);
   jsEngine.Load("hello.js");
-  const std::string result = jsEngine.Call("hello");
+  const std::string result = jsEngine.Evaluate("hello()");
   ASSERT_EQ("Hello", result);
 }
 
 TEST(JsEngineTest, LoadBadStreamFails)
 {
   BadFileReader fileReader;
   ThrowingErrorCallback errorCallback;
   AdblockPlus::JsEngine jsEngine(&fileReader, 0, &errorCallback);