blink fonts: Load Android SkFontMgr on Linux.

third_party/WebKit/Source/platform/fonts/FontCache.h

Index: third_party/WebKit/Source/platform/fonts/FontCache.h
diff --git a/third_party/WebKit/Source/platform/fonts/FontCache.h b/third_party/WebKit/Source/platform/fonts/FontCache.h
index 6de5ce2d5f00701824faff638153d7fe0ff0a8e4..c77c06fac7ca8253b4908552db8636c60f0154d0 100644
--- a/third_party/WebKit/Source/platform/fonts/FontCache.h
+++ b/third_party/WebKit/Source/platform/fonts/FontCache.h
@@ -45,9 +45,7 @@
 #include "wtf/text/WTFString.h"
 #include <limits.h>
 
-#if OS(WIN)
 #include "SkFontMgr.h"
-#endif
 
 class SkTypeface;
 
@@ -107,13 +105,14 @@ public:
     unsigned short generation();
     void invalidate();
 
+    SkFontMgr* fontManager() { return m_fontManager.get(); }
+    static void setFontManager(const RefPtr<SkFontMgr>&);
+
 #if OS(WIN)
     bool useSubpixelPositioning() const { return s_useSubpixelPositioning; }
-    SkFontMgr* fontManager() { return m_fontManager.get(); }
     static bool useDirectWrite() { return s_useDirectWrite; }
     static float deviceScaleFactor() { return s_deviceScaleFactor; }
     static void setUseDirectWrite(bool useDirectWrite) { s_useDirectWrite = useDirectWrite; }
-    static void setFontManager(const RefPtr<SkFontMgr>&);
     static void setDeviceScaleFactor(float deviceScaleFactor) { s_deviceScaleFactor = deviceScaleFactor; }
     static void setUseSubpixelPositioning(bool useSubpixelPositioning) { s_useSubpixelPositioning = useSubpixelPositioning; }
     static void addSideloadedFontForTesting(SkTypeface*);
@@ -178,6 +177,10 @@ private:
     // Implemented on skia platforms.
     PassRefPtr<SkTypeface> createTypeface(const FontDescription&, const FontFaceCreationParams&, CString& name);
 
+#if OS(ANDROID) || OS(LINUX)
+    static AtomicString getFamilyNameForCharacter(SkFontMgr*, UChar32, const FontDescription&);
+#endif
+
     PassRefPtr<SimpleFontData> fallbackOnStandardFontStyle(const FontDescription&, UChar32);
 
     template <FontFallbackPriority fallbackPriority>
@@ -188,10 +191,11 @@ private:
     // Don't purge if this count is > 0;
     int m_purgePreventCount;
 
-#if OS(WIN)
     RefPtr<SkFontMgr> m_fontManager;
-    static bool s_useDirectWrite;
     static SkFontMgr* s_fontManager;
+
+#if OS(WIN)
+    static bool s_useDirectWrite;
     static float s_deviceScaleFactor;
     static bool s_useSubpixelPositioning;
     static HashMap<String, RefPtr<SkTypeface>>* s_sideloadedFonts;