Make canvas filters use the font size in effect when the filter is set

third_party/WebKit/Source/modules/canvas2d/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 354 matching lines @@
         ImageBuffer* buffer = canvas()->buffer();
         if (buffer)
             buffer->setHasExpensiveOp();
     }
 
     canvas()->didDraw(SkRect::Make(dirtyRect));
 }
 
 bool CanvasRenderingContext2D::stateHasFilter()
 {
-    return state().hasFilter(canvas(), accessFont(), canvas()->size(), this);
+    return state().hasFilter(canvas(), canvas()->size(), this);
 }
 
 SkImageFilter* CanvasRenderingContext2D::stateGetFilter()
 {
-    return state().getFilter(canvas(), accessFont(), canvas()->size(), this);
+    return state().getFilter(canvas(), canvas()->size(), this);
+}
+
+void CanvasRenderingContext2D::snapshotStateForFilter()
+{
+    modifiableState().setFontForFilter(accessFont());
 }
 
 SkCanvas* CanvasRenderingContext2D::drawingCanvas() const
 {
     if (isContextLost())
         return nullptr;
     return canvas()->drawingCanvas();
 }
 
 SkCanvas* CanvasRenderingContext2D::existingDrawingCanvas() const
@@ skipping 655 matching lines @@
 
 unsigned CanvasRenderingContext2D::hitRegionsCount() const
 {
     if (m_hitRegionManager)
         return m_hitRegionManager->getHitRegionsCount();
 
     return 0;
 }
 
 } // namespace blink