Set preallocated TextBatch geometries to 4 rather than 32

src/gpu/GrAtlasTextContext.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 "GrAtlasTextContext.h"
 
 #include "GrBatch.h"
 #include "GrBatchFontCache.h"
@@ skipping 1755 matching lines @@
             currVertex += byteCount;
         }
         // Make sure to attach the last cache if applicable
         if (cache) {
             SkGlyphCache::AttachCache(cache);
         }
         this->flush(batchTarget, &flushInfo);
     }
 
     // The minimum number of Geometry we will try to allocate.
-    static const int kMinAllocated = 32;
+    static const int kMinAllocated = 4;
 
     // Total number of Geometry this Batch owns
     int instanceCount() const { return fInstanceCount; }
     SkAutoSTMalloc<kMinAllocated, Geometry>* geoData() { return &fGeoData; }
 
     // to avoid even the initial copy of the struct, we have a getter for the first item which
     // is used to seed the batch with its initial geometry.  After seeding, the client should call
     // init() so the Batch can initialize itself
     Geometry& geometry() { return fGeoData[0]; }
     void init() {
@@ skipping 504 matching lines @@
             gTextContext->createDrawTextBlob(rt, clip, grPaint, skPaint, viewMatrix, text,
                                              static_cast<size_t>(textLen), 0, 0, noClip));
 
     SkScalar transX = static_cast<SkScalar>(random->nextU());
     SkScalar transY = static_cast<SkScalar>(random->nextU());
     const GrAtlasTextBlob::Run::SubRunInfo& info = blob->fRuns[0].fSubRunInfo[0];
     return gTextContext->createBatch(blob, info, textLen, 0, 0, color, transX, transY, skPaint);
 }
 
 #endif