Remove unused field in micro cleanup

src/gpu/GrGlyph.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGlyph_DEFINED
 #define GrGlyph_DEFINED
 
@@ skipping 13 matching lines @@
     - failed to get metrics
  */
 struct GrGlyph {
     enum MaskStyle {
         kCoverage_MaskStyle,
         kDistance_MaskStyle
     };
     
     typedef uint32_t PackedID;
 
-    // TODO either plot or AtlasID will be valid, not both
     GrBatchAtlas::AtlasID fID;
-    GrPlot*               fPlot;
     SkPath*               fPath;
     PackedID              fPackedID;
     GrMaskFormat          fMaskFormat;
     GrIRect16             fBounds;
     SkIPoint16            fAtlasLocation;
     bool                  fTooLargeForAtlas;
 
     void init(GrGlyph::PackedID packed, const SkIRect& bounds, GrMaskFormat format) {
         fID = GrBatchAtlas::kInvalidAtlasID;
-        fPlot = NULL;
         fPath = NULL;
         fPackedID = packed;
         fBounds.set(bounds);
         fMaskFormat = format;
         fAtlasLocation.set(0, 0);
         fTooLargeForAtlas = GrBatchAtlas::GlyphTooLargeForAtlas(bounds.width(), bounds.height());
     }
 
     void free() {
         if (fPath) {
@@ skipping 40 matching lines @@
     static inline const GrGlyph::PackedID& GetKey(const GrGlyph& glyph) {
         return glyph.fPackedID;
     }
 
     static inline uint32_t Hash(GrGlyph::PackedID key) {
         return SkChecksum::Mix(key);
     }
 };
 
 #endif