Update bindings classes to use OVERRIDE / FINAL when needed

Source/bindings/v8/V8StringResource.h

Index: Source/bindings/v8/V8StringResource.h
diff --git a/Source/bindings/v8/V8StringResource.h b/Source/bindings/v8/V8StringResource.h
index b8b57944a473d920c957e4bfeb5aca17ba1ca95e..feb63a990952c79ad04828cd77fe693c67edb140 100644
--- a/Source/bindings/v8/V8StringResource.h
+++ b/Source/bindings/v8/V8StringResource.h
@@ -111,7 +111,7 @@ private:
 #endif
 };
 
-class WebCoreStringResource16 : public WebCoreStringResourceBase, public v8::String::ExternalStringResource {
+class WebCoreStringResource16 FINAL : public WebCoreStringResourceBase, public v8::String::ExternalStringResource {
 public:
     explicit WebCoreStringResource16(const String& string)
         : WebCoreStringResourceBase(string)
@@ -132,7 +132,7 @@ public:
     }
 };
 
-class WebCoreStringResource8 : public WebCoreStringResourceBase, public v8::String::ExternalAsciiStringResource {
+class WebCoreStringResource8 FINAL : public WebCoreStringResourceBase, public v8::String::ExternalAsciiStringResource {
 public:
     explicit WebCoreStringResource8(const String& string)
         : WebCoreStringResourceBase(string)