Add support for reading non-rendertarget textures.

src/gpu/GrTextStrike.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrAtlas.h"
 #include "GrGpu.h"
 #include "GrRectanizer.h"
@@ skipping 155 matching lines @@
     while (strike) {
         count2 += 1;
         strike = strike->fPrev;
     }
     SkASSERT(count == count2);
 }
 #endif
 
 #ifdef SK_DEVELOPER
 void GrFontCache::dump() const {
-/*  Disabled for now
     static int gDumpCount = 0;
     for (int i = 0; i < kMaskFormatCount; ++i) {
         if (NULL != fAtlasMgr[i]) {
             GrTexture* texture = fAtlasMgr[i]->getTexture();
             if (NULL != texture) {
                 SkString filename;
                 filename.printf("fontcache_%d%d.png", gDumpCount, i);
                 texture->savePixels(filename.c_str());
             }
         }
     }
     ++gDumpCount;
-*/
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifdef SK_DEBUG
     static int gCounter;
 #endif
 
 /*
@@ skipping 85 matching lines @@
     GrPlot* plot = fAtlasMgr->addToAtlas(&fAtlas, glyph->width(),
                                          glyph->height(), storage.get(),
                                          &glyph->fAtlasLocation);
     if (NULL == plot) {
         return false;
     }
 
     glyph->fPlot = plot;
     return true;
 }