Add a GrPathRange class

src/gpu/GrStencilAndCoverTextContext.h

Index: src/gpu/GrStencilAndCoverTextContext.h
diff --git a/src/gpu/GrStencilAndCoverTextContext.h b/src/gpu/GrStencilAndCoverTextContext.h
index 2e79f5c9b7e43f59dcf5234bd780eb81de6e5616..021a84d8760d31d8bebe15c25982cd7e2de3cd56 100644
--- a/src/gpu/GrStencilAndCoverTextContext.h
+++ b/src/gpu/GrStencilAndCoverTextContext.h
@@ -36,17 +36,23 @@ public:
     virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
 
 private:
+    class GlyphPathRange;
+    static const int kGlyphBufferSize = 1024;
+
     void init(const GrPaint&, const SkPaint&, size_t textByteLength);
-    void appendGlyph(GrGlyph::PackedID, const SkPoint&,
-                     GrTextStrike*, GrFontScaler*);
+    void initGlyphs(SkGlyphCache* cache);
+    void appendGlyph(uint16_t glyphID, float x, float y);
+    void flush();
     void finish();
 
     GrDrawState::AutoRestoreEffects fStateRestore;
     SkScalar fTextRatio;
     SkStrokeRec fStroke;
-    SkTDArray<const GrPath*> fPaths;
-    SkTDArray<SkMatrix> fTransforms;
-    SkPath fTmpPath;
+    SkGlyphCache* fGlyphCache;
+    GlyphPathRange* fGlyphs;
+    uint32_t fIndexBuffer[kGlyphBufferSize];
+    float fTransformBuffer[6 * kGlyphBufferSize];
+    int fPendingGlyphCount;
     SkMatrix fGlyphTransform;
     bool fNeedsDeviceSpaceGlyphs;
 };