Fix virtual/override/final usage in Source/bindings/.

Source/bindings/core/v8/ScriptStreamer.cpp

Index: Source/bindings/core/v8/ScriptStreamer.cpp
diff --git a/Source/bindings/core/v8/ScriptStreamer.cpp b/Source/bindings/core/v8/ScriptStreamer.cpp
index 3387a585f701ee349919e54ecd3da5f255bb17b0..3f388af2a9f9d94b182a21ff8a418739380e32f6 100644
--- a/Source/bindings/core/v8/ScriptStreamer.cpp
+++ b/Source/bindings/core/v8/ScriptStreamer.cpp
@@ -172,11 +172,11 @@ public:
     {
     }
 
-    virtual ~SourceStream() { }
+    virtual ~SourceStream() override { }
 
     // Called by V8 on a background thread. Should block until we can return
     // some data.
-    virtual size_t GetMoreData(const uint8_t** src) override
+    size_t GetMoreData(const uint8_t** src) override
     {
         ASSERT(!isMainThread());
         {
@@ -197,7 +197,7 @@ public:
     }
 
     // Called by V8 on background thread.
-    virtual bool SetBookmark() override
+    bool SetBookmark() override
     {
         ASSERT(!isMainThread());
         m_bookmarkPosition = m_queueLeadPosition;
@@ -205,7 +205,7 @@ public:
     }
 
     // Called by V8 on background thread.
-    virtual void ResetToBookmark() override
+    void ResetToBookmark() override
     {
         ASSERT(!isMainThread());
         {