ShapeDetection: support CanvasImageSource as detect() source

third_party/WebKit/Source/modules/shapedetection/FaceDetector.h

Index: third_party/WebKit/Source/modules/shapedetection/FaceDetector.h
diff --git a/third_party/WebKit/Source/modules/shapedetection/FaceDetector.h b/third_party/WebKit/Source/modules/shapedetection/FaceDetector.h
index 76b35adf4ae0f365105a10829a673a59d3b8aa07..8896c4d83b0150de8c0f783152e1a229b18c0b71 100644
--- a/third_party/WebKit/Source/modules/shapedetection/FaceDetector.h
+++ b/third_party/WebKit/Source/modules/shapedetection/FaceDetector.h
@@ -15,6 +15,7 @@ namespace blink {
 
 class Document;
 class HTMLImageElement;
+class ImageBitmap;
 class LocalDOMWindow;
 class LocalFrame;
 
@@ -26,6 +27,7 @@ class MODULES_EXPORT FaceDetector final
  public:
   static FaceDetector* create(ScriptState*);
   ScriptPromise detect(ScriptState*, const HTMLImageElement*);
+  ScriptPromise detect(ScriptState*, ImageBitmap*);

[xianglu, 2016/10/25 21:07:45]

const?

[mcasas, 2016/10/25 21:47:38]

I tried that but apparently V8 binding generates this
function call with a non-const *; also, we use 
copyBitmapData() inside the implementation, which 
is non-const and the compiler complains.

   DECLARE_TRACE();
 
  private: