Don't try to add large glyphs to the font atlas.

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 "GrGpu.h"
 #include "GrRectanizer.h"
 #include "GrTextStrike.h"
@@ skipping 271 matching lines @@
     while (!iter.done()) {
         if (plot == (*iter).fPlot) {
             (*iter).fPlot = NULL;
         }
         ++iter;
     }
 
     GrAtlas::RemovePlot(&fPlotUsage, plot);
 }
 
+bool GrTextStrike::glyphTooLargeForAtlas(GrGlyph* glyph) {
+    int width = glyph->fBounds.width();
+    int height = glyph->fBounds.height();
+    int pad = fUseDistanceField ? 2 * SK_DistanceFieldPad : 0;
+    if (width + pad > GR_PLOT_WIDTH) {
+        return true;
+    }
+    if (height + pad > GR_PLOT_HEIGHT) {
+        return true;
+    }
+
+    return false;
+}
 
 bool GrTextStrike::addGlyphToAtlas(GrGlyph* glyph, GrFontScaler* scaler) {
 #if 0   // testing hack to force us to flush our cache often
     static int gCounter;
     if ((++gCounter % 10) == 0) return false;
 #endif
 
     SkASSERT(glyph);
     SkASSERT(scaler);
     SkASSERT(fCache.find(glyph->fPackedID));
@@ skipping 25 matching lines @@
                                        glyph->height(), storage.get(),
                                        &glyph->fAtlasLocation);
 
     if (NULL == plot) {
         return false;
     }
 
     glyph->fPlot = plot;
     return true;
 }