remove unused kLCD_MaskFormat

src/gpu/GrBitmapTextContext.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 "GrBitmapTextContext.h"
 #include "GrAtlas.h"
 #include "GrDrawTarget.h"
@@ skipping 574 matching lines @@
 
         SkASSERT(fStrike);
         switch (fCurrMaskFormat) {
                 // Color bitmap text
             case kARGB_GrMaskFormat:
                 SkASSERT(!drawState->hasColorVertexAttribute());
                 drawState->setBlendFunc(fPaint.getSrcBlendCoeff(), fPaint.getDstBlendCoeff());
                 drawState->setAlpha(fSkPaint.getAlpha());
                 break;
                 // LCD text
-            case kA888_GrMaskFormat:
             case kA565_GrMaskFormat: {
                 if (kOne_GrBlendCoeff != fPaint.getSrcBlendCoeff() ||
                     kISA_GrBlendCoeff != fPaint.getDstBlendCoeff() ||
                     fPaint.numColorStages()) {
                     SkDebugf("LCD Text will not draw correctly.\n");
                 }
                 SkASSERT(!drawState->hasColorVertexAttribute());
                 // We don't use the GrPaint's color in this case because it's been premultiplied by
                 // alpha. Instead we feed in a non-premultiplied color, and multiply its alpha by
                 // the mask texture color. The end result is that we get
@@ skipping 33 matching lines @@
     }
 }
 
 inline void GrBitmapTextContext::finish() {
     this->flush();
     fTotalVertexCount = 0;
 
     GrTextContext::finish();
 }