Fix StrictTypeChecking on interface type attributes

Source/core/html/canvas/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 659 matching lines @@
         return;
     realizeSaves();
     modifiableState().m_globalComposite = op;
     modifiableState().m_globalBlend = blendMode;
     GraphicsContext* c = drawingContext();
     if (!c)
         return;
     c->setCompositeOperation(op, blendMode);
 }
 
-void CanvasRenderingContext2D::setCurrentTransform(PassRefPtr<SVGMatrixTearOff> passMatrixTearOff, ExceptionState& exceptionState)
+void CanvasRenderingContext2D::setCurrentTransform(PassRefPtr<SVGMatrixTearOff> passMatrixTearOff)
 {
     RefPtr<SVGMatrixTearOff> matrixTearOff = passMatrixTearOff;
-
-    // FIXME: bindings should do null checking and throw: http://crbug.com/321518
-    if (!matrixTearOff) {
-        exceptionState.throwTypeError("currentTransform only accepts a SVGMatrix.");
-        return;
-    }
-
     const AffineTransform& transform = matrixTearOff->value();
     setTransform(transform.a(), transform.b(), transform.c(), transform.d(), transform.e(), transform.f());
 }
 
 void CanvasRenderingContext2D::scale(float sx, float sy)
 {
     GraphicsContext* c = drawingContext();
     if (!c)
         return;
     if (!state().m_invertibleCTM)
@@ skipping 1741 matching lines @@
     c->setAlphaAsFloat(1.0);
     c->clearShadow();
     c->setCompositeOperation(CompositeSourceOver, blink::WebBlendModeNormal);
     c->drawFocusRing(path, focusRingWidth, focusRingOutline, focusRingColor);
     c->restore();
 
     didDraw(dirtyRect);
 }
 
 } // namespace WebCore