Fix synthetic bold/italic for webfonts on windows

Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp

Index: Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp
diff --git a/Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp b/Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp
index b175fc0885265e3a3a8735565e1cdc75bf28a60e..ecf42ef0664ed88c7ffd2acb51f92f9dfa5d5056 100644
--- a/Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp
+++ b/Source/platform/fonts/skia/FontCustomPlatformDataSkia.cpp
@@ -56,6 +56,29 @@ FontCustomPlatformData::~FontCustomPlatformData()
 FontPlatformData FontCustomPlatformData::fontPlatformData(float size, bool bold, bool italic, FontOrientation orientation, FontWidthVariant)
 {
     ASSERT(m_typeface);
+#if OS(WIN)
+    // FIXME: Skia currently renders synthetic bold and italics with hinting and without
+    // linear metrics on windows. Using CreateFromName and specifying the bold/italics
+    // style allows for proper rendering of synthetic style. Once Skia has been updated
+    // this workaround will no longer be needed. crbug.com/332958
+    bool syntheticBold = bold && !m_typeface->isBold();
+    bool syntheticItalic = italic && !m_typeface->isItalic();
+    if (syntheticBold || syntheticItalic) {
+        SkString name;
+        m_typeface->getFamilyName(&name);
+
+        int style = SkTypeface::kNormal;
+        if (syntheticBold)
+            style |= SkTypeface::kBold;
+        if (syntheticItalic)
+            style |= SkTypeface::kItalic;
+
+        RefPtr<SkTypeface> typeface = adoptRef(SkTypeface::CreateFromName(name.c_str(), static_cast<SkTypeface::Style>(style)));
+        syntheticBold = false;
+        syntheticItalic = false;
+        return FontPlatformData(typeface.release(), "", size, syntheticBold, syntheticItalic, orientation);
+    }
+#endif
     return FontPlatformData(m_typeface.get(), "", size, bold && !m_typeface->isBold(), italic && !m_typeface->isItalic(), orientation);
 }