Pass DOM locale to Skia in FontCache::getFontDataForCharacter

Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h

Index: Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h
diff --git a/Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h b/Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h
index 7f94d604ea1e6ed5c6f58fea232fe9828c391748..b7aa6132077f0aa41414fbb687410a0f9b8e2f26 100644
--- a/Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h
+++ b/Source/core/platform/graphics/harfbuzz/FontPlatformDataHarfBuzz.h
@@ -39,6 +39,7 @@
 #include "wtf/Forward.h"
 #include "wtf/HashTableDeletedValueType.h"
 #include "wtf/RefPtr.h"
+#include "wtf/text/AtomicString.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringImpl.h"
 
@@ -66,7 +67,7 @@ public:
     FontPlatformData();
     FontPlatformData(float textSize, bool fakeBold, bool fakeItalic);
     FontPlatformData(const FontPlatformData&);
-    FontPlatformData(SkTypeface*, const char* name, float textSize, bool fakeBold, bool fakeItalic, FontOrientation = Horizontal);
+    FontPlatformData(SkTypeface*, const char* name, float textSize, bool fakeBold, bool fakeItalic, FontOrientation = Horizontal, const AtomicString& locale = AtomicString());
     FontPlatformData(const FontPlatformData& src, float textSize);
     ~FontPlatformData();
 
@@ -138,6 +139,9 @@ private:
     bool m_fakeItalic;
     FontOrientation m_orientation;
     FontRenderStyle m_style;
+    // Only set for platforms (e.g. Android) that FontCache::getFontDataForCharacter() may return different FontData
+    // for different locales of FontDescriptions.
+    AtomicString m_locale;
     mutable RefPtr<HarfBuzzFace> m_harfBuzzFace;
     bool m_isHashTableDeletedValue;
 };