Merge the Sky Engine changes from the SkyDart branch

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

Index: sky/engine/core/html/canvas/WebGLDepthTexture.h
diff --git a/sky/engine/core/html/canvas/WebGLDepthTexture.h b/sky/engine/core/html/canvas/WebGLDepthTexture.h
index dfa2952db1b0df254d78e779e28bd4ad400cb7c8..3e4a032e30b61d2f5c5fe2b6668fe333402698d4 100644
--- a/sky/engine/core/html/canvas/WebGLDepthTexture.h
+++ b/sky/engine/core/html/canvas/WebGLDepthTexture.h
@@ -26,13 +26,13 @@
 #ifndef SKY_ENGINE_CORE_HTML_CANVAS_WEBGLDEPTHTEXTURE_H_
 #define SKY_ENGINE_CORE_HTML_CANVAS_WEBGLDEPTHTEXTURE_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 WebGLDepthTexture final : public WebGLExtension, public ScriptWrappable {
+class WebGLDepthTexture final : public WebGLExtension, public DartWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtr<WebGLDepthTexture> create(WebGLRenderingContextBase*);