Template out V8 and prepare for other JS engine implementations

src/JsContext.h

Index: src/JsContext.h
===================================================================
--- a/src/JsContext.h
+++ b/src/JsContext.h
@@ -23,23 +23,25 @@
 
 namespace AdblockPlus
 {
-  class JsContext
+  template <typename T> class JsContextTemplate
   {
   public:
-    explicit JsContext(JsEngine& jsEngine);
+    explicit JsContextTemplate<T>(JsEngine& jsEngine);
 
-    v8::Local<v8::Context> GetV8Context() const
+    typename T::LocalContext GetJSEngineContext() const
     {
       return context;
     }
 
   private:
-    const v8::Locker locker;
-    const v8::Isolate::Scope isolateScope;
-    const v8::HandleScope handleScope;
-    const v8::Local<v8::Context> context;
-    const v8::Context::Scope contextScope;
+    const typename T::Locker locker;
+    const typename T::Isolate::Scope isolateScope;
+    const typename T::HandleScope handleScope;
+    const typename T::LocalContext context;
+    const typename T::Context::Scope contextScope;
   };
+
+  typedef JsContextTemplate<JsEngineNamespaceImpl> JsContext;
 }
 
 #endif