Bug 1270688. Use system host settings for skia dwrite font settings. r=lsalzman

gfx/skia/generate_mozbuild.py

@@ -73,6 +73,7 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] in {
 if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
     DEFINES['UNICODE'] = True
     DEFINES['_UNICODE'] = True
+    DEFINES['SK_FONT_HOST_USE_SYSTEM_SETTINGS'] = 1
     UNIFIED_SOURCES += [
         'skia/src/fonts/SkFontMgr_indirect.cpp',
         'skia/src/fonts/SkRemotableFontMgr.cpp',

gfx/skia/moz.build

@@ -609,6 +609,7 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] in {
 if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
     DEFINES['UNICODE'] = True
     DEFINES['_UNICODE'] = True
+    DEFINES['SK_FONT_HOST_USE_SYSTEM_SETTINGS'] = 1
     UNIFIED_SOURCES += [
         'skia/src/fonts/SkFontMgr_indirect.cpp',
         'skia/src/fonts/SkRemotableFontMgr.cpp',

gfx/skia/skia/src/ports/SkTypeface_win_dw.cpp

@@ -266,7 +266,7 @@ void DWriteFontTypeface::onFilterRec(SkScalerContext::Rec* rec) const {
     rec->setHinting(h);
 
 #if SK_FONT_HOST_USE_SYSTEM_SETTINGS
-    IDWriteFactory* factory = get_dwrite_factory();
+    IDWriteFactory* factory = sk_get_dwrite_factory();
     if (factory != nullptr) {
         SkTScopedComPtr<IDWriteRenderingParams> defaultRenderingParams;
         if (SUCCEEDED(factory->CreateRenderingParams(&defaultRenderingParams))) {