Revert of Restore text alloc optimizations. (patchset #4 of https://codereview.chromium.org/466363009/)

Reason for revert:
GM failures on http://108.170.220.120:10115/builders/Test-Ubuntu12-ShuttleA-GTX660-x86-Release/builds/1867/

Original issue's description:
> Restore text vertex buffer alloc and other optimizations.
>
> Modifies the fontcache GM to ensure that the font cache is forced to flush.
>
> Committed: https://skia.googlesource.com/skia/+/9c3d24b9d1ba3d955094ff0cb1ba2d11e1c1adca

R=bsalomon@google.com, robertphillips@google.com, jvanverth@google.com
TBR=bsalomon@google.com, jvanverth@google.com, robertphillips@google.com
NOTREECHECKS=true
NOTRY=true

Author: djsollen@google.com

Review URL: https://codereview.chromium.org/510103003
diff --git a/src/gpu/GrDistanceFieldTextContext.h b/src/gpu/GrDistanceFieldTextContext.h
index c9fe82d..75a13b3 100644
--- a/src/gpu/GrDistanceFieldTextContext.h
+++ b/src/gpu/GrDistanceFieldTextContext.h
@@ -30,8 +30,18 @@
     virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
 
 private:
+    GrTextStrike*           fStrike;
+    SkScalar                fTextRatio;
+    bool                    fUseLCDText;
+    bool                    fEnableDFRendering;
+    SkAutoTUnref<GrEffect>  fCachedEffect;
+    // Used to check whether fCachedEffect is still valid.
+    uint32_t                fEffectTextureUniqueID;
+    SkColor                 fEffectColor;
+    uint32_t                fEffectFlags;
+    GrTexture*              fGammaTexture;
+
     void init(const GrPaint&, const SkPaint&);
-    void allocateVertices(const char text[], size_t byteLength);
     void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontScaler*);
     void flushGlyphs();                 // automatically called by destructor
     void setupCoverageEffect(const SkColor& filteredColor);
@@ -44,19 +54,9 @@
         kDefaultRequestedVerts   = kDefaultRequestedGlyphs * 4,
     };
 
-    GrTextStrike*           fStrike;
-    SkScalar                fTextRatio;
-    bool                    fUseLCDText;
-    bool                    fEnableDFRendering;
-    SkAutoTUnref<GrEffect>  fCachedEffect;
-    // Used to check whether fCachedEffect is still valid.
-    uint32_t                fEffectTextureUniqueID;
-    SkColor                 fEffectColor;
-    uint32_t                fEffectFlags;
-    GrTexture*              fGammaTexture;
-
     void*                   fVertices;
-    int                     fVertexCount;
+    int32_t                 fMaxVertices;
+    GrTexture*              fCurrTexture;
     int                     fCurrVertex;
     SkRect                  fVertexBounds;
 };