Force ComplexPath if any part of the node requires it

Source/platform/fonts/win/FontCacheSkiaWin.cpp

Index: Source/platform/fonts/win/FontCacheSkiaWin.cpp
diff --git a/Source/platform/fonts/win/FontCacheSkiaWin.cpp b/Source/platform/fonts/win/FontCacheSkiaWin.cpp
index b6dde3176083df54eac3c9dcb5602c9c22fda770..a2c9a6aef009a7f7705c83979ae7e631e6266fcb 100644
--- a/Source/platform/fonts/win/FontCacheSkiaWin.cpp
+++ b/Source/platform/fonts/win/FontCacheSkiaWin.cpp
@@ -76,7 +76,9 @@ FontCache::FontCache()
 
 // Given the desired base font, this will create a SimpleFontData for a specific
 // font that can be used to render the given range of characters.
-PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(const FontDescription& fontDescription, UChar32 character, const SimpleFontData*)
+PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(
+    const FontDescription& fontDescription, UChar32 character,
+    const SimpleFontData* originalFontData)
 {
     // First try the specified font with standard style & weight.
     if (fontDescription.style() == FontStyleItalic
@@ -161,6 +163,15 @@ PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(const FontDescrip
         data = getFontPlatformData(fontDescription, createByFamily);
     }
 
+    // For font fallback we want to match the subpixel behavior of the original
+    // font. Mixing subpixel and non-subpixel in the same text run looks really
+    // odd and causes problems with preferred width calculations.
+    if (data && originalFontData) {

[leviw_travelin_and_unemployed, 2014/10/01 20:33:15]

Isn't this necessary for other platforms?

[eae, 2014/10/01 21:16:43]

Not at the moment, windows is the only platform where these can change at
runtime. For the other platforms subpixel is determined at startup.

+        const FontPlatformData& platformData = originalFontData->platformData();
+        data->setMinSizeForAntiAlias(platformData.minSizeForAntiAlias());
+        data->setMinSizeForSubpixel(platformData.minSizeForSubpixel());
+    }
+
     // When i-th font (0-base) in |panUniFonts| contains a character and
     // we get out of the loop, |i| will be |i + 1|. That is, if only the
     // last font in the array covers the character, |i| will be numFonts.