Revert of Add FontCache API for retrieving prioritized fallback fonts

third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp

Index: third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp b/third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp
index d9af8814f20745f374402948176848edc5db9597..591ba4f2cbf8872ef6eac5ec127e8ec2ee268ed0 100644
--- a/third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp
+++ b/third_party/WebKit/Source/platform/fonts/skia/FontCacheSkia.cpp
@@ -43,35 +43,6 @@
 #include "wtf/text/CString.h"
 #include <unicode/locid.h>
 
-// Unfortunately, these chosen font names require a bit of experimentation and
-// researching on the respective platforms as to what works best and is widely
-// available. They may require further manual tuning. Mozilla's choices in the
-// gfxPlatform*::GetCommonFallbackFonts methods collects some of the outcome of
-// this experimentation. On Android, the available fonts in
-// /system/etc/fonts.xml give a clearer picture of which fonts are available and
-// can be widely used successfully. On Linux, updating and improving this list
-// requires finding out widely used distribution fonts, for example on current
-// Ubuntu versions.
-#if OS(WIN)
-const char* kColorEmojiFonts[] = { "Segoe UI Emoji", "Segoe UI Symbol" };
-const char* kTextEmojiFonts[] = { "Segoe UI Symbol", "Code2000", "Lucida Sans Unicode" };
-const char* kSymbolsFonts[] = { "Segoe UI Symbol", "Code2000", "Lucida Sans Unicode" };
-const char* kMathFonts[] = { "Cambria Math", "Segoe UI Symbol", "Code2000" };
-#elif OS(ANDROID)
-// Due to crbug.com/322658 we cannot properly specify Android font family names here,
-// The way Skia's SkFontMgr_android gives them canonical names, we can however
-// reference the Noto Color Emoji font under "56##fallback" on Android 6.0.1
-const char* kColorEmojiFonts[] = { "56##fallback", "Noto Color Emoji", "Android Emoji" };
-const char* kTextEmojiFonts[] = { "Droid Sans Fallback" };
-const char* kSymbolsFonts[] = { "Droid Sans Fallback" };
-const char* kMathFonts[] = { "Droid Sans Fallback" };
-#elif OS(LINUX)
-const char* kColorEmojiFonts[] = { "Noto Color Emoji", "Noto Sans Symbols", "Symbola", "DejaVu Sans" };
-const char* kTextEmojiFonts[] = { "Noto Sans Symbols", "Symbola", "Droid Sans Fallback", "DejaVu Sans" };
-const char* kSymbolsFonts[] = { "FreeSerif", "FreeMono", "Droid Sans Fallback", "DejaVu Sans" };
-const char* kMathFonts[] = { "FreeSerif", "FreeMono", "Droid Sans Fallback", "DejaVu Sans" };
-#endif
-
 #if !OS(WIN) && !OS(ANDROID)
 #include "SkFontConfigInterface.h"
 
@@ -190,32 +161,6 @@
     return fontDataFromFontPlatformData(fontPlatformData, shouldRetain);
 }
 
-const Vector<AtomicString> FontCache::platformFontListForFallbackPriority(FontFallbackPriority fallbackPriority) const
-{
-    Vector<AtomicString> returnVector;
-    switch (fallbackPriority) {
-    case FontFallbackPriority::EmojiEmoji:
-        for (size_t i = 0; i < WTF_ARRAY_LENGTH(kColorEmojiFonts); ++i)
-            returnVector.append(kColorEmojiFonts[i]);
-        break;
-    case FontFallbackPriority::EmojiText:
-        for (size_t i = 0; i < WTF_ARRAY_LENGTH(kTextEmojiFonts); ++i)
-            returnVector.append(kTextEmojiFonts[i]);
-        break;
-    case FontFallbackPriority::Math:
-        for (size_t i = 0; i < WTF_ARRAY_LENGTH(kMathFonts); ++i)
-            returnVector.append(kMathFonts[i]);
-        break;
-    case FontFallbackPriority::Symbols:
-        for (size_t i = 0; i < WTF_ARRAY_LENGTH(kSymbolsFonts); ++i)
-            returnVector.append(kSymbolsFonts[i]);
-        break;
-    default:
-        ASSERT_NOT_REACHED();
-    }
-    return returnVector;
-}
-
 #if OS(WIN)
 static inline SkFontStyle fontStyle(const FontDescription& fontDescription)
 {