Distance field path optimizations and clean up.

src/gpu/GrDistanceFieldTextContext.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDistanceFieldTextContext.h"
 #include "GrAtlas.h"
 #include "GrBitmapTextContext.h"
@@ skipping 56 matching lines @@
 #if SK_FORCE_DISTANCEFIELD_FONTS
     fEnableDFRendering = true;
 #else
     fEnableDFRendering = enable;
 #endif
     fStrike = NULL;
     fGammaTexture = NULL;
 
     fEffectTextureUniqueID = SK_InvalidUniqueID;
     fEffectColor = GrColor_ILLEGAL;
-    fEffectFlags = 0;
+    fEffectFlags = kInvalid_DistanceFieldEffectFlag;
 
     fVertices = NULL;
     fCurrVertex = 0;
     fAllocVertexCount = 0;
     fTotalVertexCount = 0;
     fCurrTexture = NULL;
 
     fVertexBounds.setLargestInverted();
 }
 
@@ skipping 609 matching lines @@
     }
 }
 
 inline void GrDistanceFieldTextContext::finish() {
     this->flush();
     fTotalVertexCount = 0;
 
     GrTextContext::finish();
 }