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

src/gpu/GrTextStrike.cpp

Index: src/gpu/GrTextStrike.cpp
diff --git a/src/gpu/GrTextStrike.cpp b/src/gpu/GrTextStrike.cpp
index 24fa7075486cbd00db9a39d02e101aeb248ca2dc..fa97f73f05c603911b685ce8068218f36ef3b2b0 100644
--- a/src/gpu/GrTextStrike.cpp
+++ b/src/gpu/GrTextStrike.cpp
@@ -289,6 +289,19 @@ void GrTextStrike::removePlot(const GrPlot* plot) {
     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