Switch HTMLCanvasElement over to new-style ExceptionState.

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 1864 matching lines @@
 }
 
 PassRefPtr<ImageData> CanvasRenderingContext2D::webkitGetImageDataHD(float sx, float sy, float sw, float sh, ExceptionState& exceptionState) const
 {
     return getImageData(ImageBuffer::BackingStoreCoordinateSystem, sx, sy, sw, sh, exceptionState);
 }
 
 PassRefPtr<ImageData> CanvasRenderingContext2D::getImageData(ImageBuffer::CoordinateSystem coordinateSystem, float sx, float sy, float sw, float sh, ExceptionState& exceptionState) const
 {
     if (!canvas()->originClean()) {
-        exceptionState.throwSecurityError(ExceptionMessages::failedToExecute("getImageData", "CanvasRenderingContext2D", "the canvas has been tainted by cross-origin data."));
+        exceptionState.throwSecurityError(ExceptionMessages::failedToExecute("getImageData", "CanvasRenderingContext2D", "The canvas has been tainted by cross-origin data."));
         return 0;
     }
 
     if (!sw || !sh) {
         exceptionState.throwUninformativeAndGenericDOMException(IndexSizeError);
         return 0;
     }
     if (!std::isfinite(sx) || !std::isfinite(sy) || !std::isfinite(sw) || !std::isfinite(sh)) {
         exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError);
         return 0;
@@ skipping 531 matching lines @@
     const int focusRingWidth = 5;
     const int focusRingOutline = 0;
     c->drawFocusRing(path, focusRingWidth, focusRingOutline, focusRingColor);
 
     c->restore();
 
     didDraw(dirtyRect);
 }
 
 } // namespace WebCore