Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/html/canvas/EXTFragDepth.h

Index: sky/engine/core/html/canvas/EXTFragDepth.h
diff --git a/sky/engine/core/html/canvas/EXTFragDepth.h b/sky/engine/core/html/canvas/EXTFragDepth.h
index 989271dbd4ecb1a88675317823eac7bc3ef58162..a243007c5f574b97d9c32722c2a5d795beb95b5b 100644
--- a/sky/engine/core/html/canvas/EXTFragDepth.h
+++ b/sky/engine/core/html/canvas/EXTFragDepth.h
@@ -26,13 +26,13 @@
 #ifndef SKY_ENGINE_CORE_HTML_CANVAS_EXTFRAGDEPTH_H_
 #define SKY_ENGINE_CORE_HTML_CANVAS_EXTFRAGDEPTH_H_
 
-#include "sky/engine/bindings/core/v8/ScriptWrappable.h"
+#include "sky/engine/tonic/dart_wrappable.h"
 #include "sky/engine/core/html/canvas/WebGLExtension.h"
 #include "sky/engine/wtf/PassRefPtr.h"
 
 namespace blink {
 
-class EXTFragDepth final : public WebGLExtension, public ScriptWrappable {
+class EXTFragDepth final : public WebGLExtension, public DartWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtr<EXTFragDepth> create(WebGLRenderingContextBase*);