Make the FloatSize constructor from an IntSize explicit.

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1208 matching lines @@
     drawingBuffer()->markContentsChanged();
 
     LayoutBox* layoutBox = canvas()->layoutBox();
     if (layoutBox && layoutBox->hasAcceleratedCompositing()) {
         m_markedCanvasDirty = true;
         canvas()->clearCopiedImage();
         layoutBox->contentChanged(changeType);
     } else {
         if (!m_markedCanvasDirty) {
             m_markedCanvasDirty = true;
-            canvas()->didDraw(FloatRect(FloatPoint(0, 0), clampedCanvasSize()));
+            canvas()->didDraw(FloatRect(FloatPoint(0, 0), FloatSize(clampedCanvasSize())));
         }
     }
 }
 
 WebGLRenderingContextBase::HowToClear WebGLRenderingContextBase::clearIfComposited(GLbitfield mask)
 {
     if (isContextLost())
         return Skipped;
 
     if (!drawingBuffer()->bufferClearNeeded() || (mask && m_framebufferBinding))
@@ skipping 5688 matching lines @@
 
     return totalBytesPerPixel;
 }
 
 DrawingBuffer* WebGLRenderingContextBase::drawingBuffer() const
 {
     return m_drawingBuffer.get();
 }
 
 } // namespace blink