Add plumbing in blink to allow overriding the default font collection.

third_party/WebKit/Source/web/win/WebFontRendering.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "public/web/win/WebFontRendering.h"
 
 #include "platform/fonts/FontCache.h"
 
 namespace blink {
 
 // static
 void WebFontRendering::setUseDirectWrite(bool useDirectWrite)
 {
     FontCache::setUseDirectWrite(useDirectWrite);
 }
 
 // static
 void WebFontRendering::setDirectWriteFactory(IDWriteFactory* factory)
 {
     FontCache::setDirectWriteFactory(factory);
 }
 
 // static
+void WebFontRendering::setSkiaFontManager(const skia::RefPtr<SkFontMgr>& fontManager)
+{
+    FontCache::setFontManager(fontManager);
+}
+
+// static
 void WebFontRendering::setDeviceScaleFactor(float deviceScaleFactor)
 {
     FontCache::setDeviceScaleFactor(deviceScaleFactor);
 }
 
 // static
 void WebFontRendering::setUseSubpixelPositioning(bool useSubpixelPositioning)
 {
     FontCache::setUseSubpixelPositioning(useSubpixelPositioning);
 }
@@ skipping 28 matching lines @@
     SkFontHost::SetSubpixelOrder(order);
 }
 
 // static
 void WebFontRendering::setLCDOrientation(SkFontHost::LCDOrientation orientation)
 {
     SkFontHost::SetSubpixelOrientation(orientation);
 }
 
 } // namespace blink