Make CSSFontFace::willUseFontData() load fonts with unicode-range

Source/core/css/CSSFontFace.h

Index: Source/core/css/CSSFontFace.h
diff --git a/Source/core/css/CSSFontFace.h b/Source/core/css/CSSFontFace.h
index 716c5a78b54e78f8d4e15d16ebe61639d71ccd07..21afc97374373fad1d06edeedb96ced677d7cb23 100644
--- a/Source/core/css/CSSFontFace.h
+++ b/Source/core/css/CSSFontFace.h
@@ -97,6 +97,7 @@ public:
     class UnicodeRangeSet {
     public:
         explicit UnicodeRangeSet(const Vector<UnicodeRange>&);
+        bool contains(UChar32) const;
         bool intersectsWith(const String&) const;
         bool isEntireRange() const { return m_ranges.isEmpty(); }
         size_t size() const { return m_ranges.size(); }
@@ -106,7 +107,7 @@ public:
     };
 
     FontFace::LoadStatus loadStatus() const { return m_fontFace->loadStatus(); }
-    void willUseFontData(const FontDescription&);
+    bool willUseFontData(const FontDescription&, const String& text);

[dglazkov, 2014/04/29 16:37:00]

Might need to rename this into something that makes sense to return a boolean.
This function is really trying to opportunistically start a load, rather than
"use font data" :)

[Kunihiko Sakamoto, 2014/04/30 03:31:21]

Renamed to maybeScheduleFontLoad.

     void load(const FontDescription&, CSSFontSelector* = 0);
 
     bool hadBlankText() { return isValid() && m_sources.first()->hadBlankText(); }