Added the CanvasImageSource interface, which all types that a canvas can draw

tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate

Index: tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate b/tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate
index 3ce955f5082b2f33b4688c7c4f61fdfff1eb5614..08134baa6e807008e459535a32cd082d9c20c9b4 100644
--- a/tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate
+++ b/tools/dom/templates/html/impl/impl_CanvasRenderingContext2D.darttemplate
@@ -49,6 +49,25 @@ $!MEMBERS
     $dom_arc(x, y, radius, startAngle, endAngle, anticlockwise);
   }
 
+  @DomName('CanvasRenderingContext2D.drawImage')
+  void drawImage(CanvasImageSource source, num x, num y) {
+    $dom_drawImage(source, x, y);
+  }
+
+  @DomName('CanvasRenderingContext2D.drawImage')
+  void drawImageAndScale(CanvasImageSource source, num x, num y, num width, num

[blois, 2013/03/14 16:24:10]

drawImageAtSize? Would also use destinationX, destinationY, destinationWidth,
destinationHeight.

[Andrei Mouravski, 2013/03/15 00:08:52]

Done.

+      height) {
+    $dom_drawImage(source, x, y, width, height);
+  }
+
+  @DomName('CanvasRenderingContext2D.drawImage')
+  void drawImageAndTransform(CanvasImageSource source, num sourceX, num sourceY,

[blois, 2013/03/14 16:24:10]

Might be nice to use rects here (srcRect, destRect), not sure though.

A drawImage(img, {Rect srcRect, Rect dstRect})?

[Andrei Mouravski, 2013/03/15 00:08:52]

Done.

+      num sourceWidth, num sourceHeight, num destinationX, num destinationY,
+      num destinationWidth, num destinationHeight) {
+    $dom_drawImage(source, sourceX, sourceY, sourceWidth, sourceHeight,
+        destinationX, destinationY, destinationWidth, destinationHeight);
+  }
+
 
 $if DART2JS
   @DomName('CanvasRenderingContext2D.lineDashOffset')