Remove unneeded bounds outset in GrDrawContext::drawVertices.

src/gpu/GrDrawContext.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 "GrBatchTest.h"
 #include "GrColor.h"
 #include "GrDrawContext.h"
@@ skipping 746 matching lines @@
 
     // TODO clients should give us bounds
     SkRect bounds;
     if (!bounds.setBoundsCheck(positions, vertexCount)) {
         SkDebugf("drawVertices call empty bounds\n");
         return;
     }
 
     viewMatrix.mapRect(&bounds);
 
-    // If we don't have AA then we outset for a half pixel in each direction to account for
-    // snapping. We also do this for the "hair" primitive types: lines and points since they have
-    // a 1 pixel thickness in device space.
-    if (!paint.isAntiAlias() || GrIsPrimTypeLines(primitiveType) ||
-        kPoints_GrPrimitiveType == primitiveType) {
-        bounds.outset(0.5f, 0.5f);
-    }
-
     SkAutoTUnref<GrDrawBatch> batch(new GrDrawVerticesBatch(paint.getColor(),
                                                             primitiveType, viewMatrix, positions,
                                                             vertexCount, indices, indexCount,
                                                             colors, texCoords, bounds));
 
     GrPipelineBuilder pipelineBuilder(paint, this->mustUseHWAA(paint));
     this->getDrawTarget()->drawBatch(pipelineBuilder, this, clip, batch);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 643 matching lines @@
 
 void GrDrawContext::drawBatch(const GrPipelineBuilder& pipelineBuilder, const GrClip& clip,
                               GrDrawBatch* batch) {
     ASSERT_SINGLE_OWNER
     RETURN_IF_ABANDONED
     SkDEBUGCODE(this->validate();)
     GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawBatch");
 
     this->getDrawTarget()->drawBatch(pipelineBuilder, this, clip, batch);
 }