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/GrBitmapTextContext.h b/src/gpu/GrBitmapTextContext.h
index 24ee7e8..6d4ea6d 100644
--- a/src/gpu/GrBitmapTextContext.h
+++ b/src/gpu/GrBitmapTextContext.h
@@ -30,8 +30,9 @@
     virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
 
 private:
+    GrTextStrike*          fStrike;
+
     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 finish();
@@ -43,13 +44,12 @@
         kDefaultRequestedVerts   = kDefaultRequestedGlyphs * 4,
     };
 
-    GrTextStrike*               fStrike;
+    void*                       fVertices;
+    int32_t                     fMaxVertices;
+    GrTexture*                  fCurrTexture;
     SkAutoTUnref<GrEffect>      fCachedEffect;
     // Used to check whether fCachedEffect is still valid.
     uint32_t                    fEffectTextureUniqueID;
-
-    void*                       fVertices;
-    int                         fVertexCount;
     int                         fCurrVertex;
     SkRect                      fVertexBounds;
 };