Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/html

Source/core/html/canvas/WebGLRenderingContextBase.cpp

Index: Source/core/html/canvas/WebGLRenderingContextBase.cpp
diff --git a/Source/core/html/canvas/WebGLRenderingContextBase.cpp b/Source/core/html/canvas/WebGLRenderingContextBase.cpp
index 59ed09225afc84ace36e7815e5951a4bb7543303..d4ca96806f117695eae84238d5ae857658c32cf7 100644
--- a/Source/core/html/canvas/WebGLRenderingContextBase.cpp
+++ b/Source/core/html/canvas/WebGLRenderingContextBase.cpp
@@ -497,7 +497,7 @@ private:
     RawPtrWillBeMember<WebGLRenderingContextBase> m_context;
 };
 
-class WebGLRenderingContextLostCallback FINAL : public NoBaseWillBeGarbageCollectedFinalized<WebGLRenderingContextLostCallback>, public blink::WebGraphicsContext3D::WebGraphicsContextLostCallback {
+class WebGLRenderingContextLostCallback final : public NoBaseWillBeGarbageCollectedFinalized<WebGLRenderingContextLostCallback>, public blink::WebGraphicsContext3D::WebGraphicsContextLostCallback {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<WebGLRenderingContextLostCallback> create(WebGLRenderingContextBase* context)
@@ -521,7 +521,7 @@ private:
     RawPtrWillBeMember<WebGLRenderingContextBase> m_context;
 };
 
-class WebGLRenderingContextErrorMessageCallback FINAL : public NoBaseWillBeGarbageCollectedFinalized<WebGLRenderingContextErrorMessageCallback>, public blink::WebGraphicsContext3D::WebGraphicsErrorMessageCallback {
+class WebGLRenderingContextErrorMessageCallback final : public NoBaseWillBeGarbageCollectedFinalized<WebGLRenderingContextErrorMessageCallback>, public blink::WebGraphicsContext3D::WebGraphicsErrorMessageCallback {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<WebGLRenderingContextErrorMessageCallback> create(WebGLRenderingContextBase* context)