Consolidate handling of infinitely thin primitives and aa bloat handing WRT batch bounds

src/gpu/batches/GrAtlasTextBatch.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrAtlasTextBatch.h"
 
 #include "GrBatchFlushState.h"
@@ skipping 140 matching lines @@
         // bounds sanity check
         SkRect rect;
         rect.setLargestInverted();
         SkPoint* vertex = (SkPoint*) ((char*)blobVertices);
         rect.growToInclude(vertex, vertexStride, kVerticesPerGlyph * subRunGlyphCount);
 
         if (this->usesDistanceFields()) {
             args.fViewMatrix.mapRect(&rect);
         }
         // Allow for small numerical error in the bounds.
-        SkRect bounds = fBounds;
+        SkRect bounds = this->bounds();
         bounds.outset(0.001f, 0.001f);
         SkASSERT(bounds.contains(rect));
 #endif
 
         currVertex += byteCount;
     }
 
     this->flush(target, &flushInfo);
 }
 
@@ skipping 60 matching lines @@
     // We steal the ref on the blobs from the other TextBatch and set its count to 0 so that
     // it doesn't try to unref them.
 #ifdef SK_DEBUG
     for (int i = 0; i < that->fGeoCount; ++i) {
         that->fGeoData.get()[i].fBlob = (Blob*)0x1;
     }
 #endif
     that->fGeoCount = 0;
     fGeoCount = newGeoCount;
 
-    this->joinBounds(that->bounds());
+    this->joinBounds(*that);
     return true;
 }
 
 // TODO just use class params
 // TODO trying to figure out why lcd is so whack
 sk_sp<GrGeometryProcessor> GrAtlasTextBatch::setupDfProcessor(const SkMatrix& viewMatrix,
                                                               SkColor filteredColor,
                                                               GrColor color,
                                                               GrTexture* texture) const {
     GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
@@ skipping 51 matching lines @@
                                                   flags,
                                                   this->usesLocalCoords());
 #endif
     }
 
 }
 
 void GrBlobRegenHelper::flush() {
     fBatch->flush(fTarget, fFlushInfo);
 }