Fix color emoji.

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 "GrDrawTarget.h"
@@ skipping 394 matching lines @@
 
     if (NULL == fStrike) {
         fStrike = fContext->getFontCache()->getStrike(scaler, true);
     }
 
     GrGlyph* glyph = fStrike->getGlyph(packed, scaler);
     if (NULL == glyph || glyph->fBounds.isEmpty()) {
         return;
     }
 
+    // TODO: support color glyphs
+    if (kA8_GrMaskFormat != glyph->fMaskFormat) {
+        return;
+    }
+
     SkScalar sx = SkFixedToScalar(vx);
     SkScalar sy = SkFixedToScalar(vy);
 /*
     // not valid, need to find a different solution for this
     vx += SkIntToFixed(glyph->fBounds.fLeft);
     vy += SkIntToFixed(glyph->fBounds.fTop);
 
     // keep them as ints until we've done the clip-test
     GrFixed width = glyph->fBounds.width();
     GrFixed height = glyph->fBounds.height();
 
     // check if we clipped out
     if (true || NULL == glyph->fPlot) {
         int x = vx >> 16;
         int y = vy >> 16;
         if (fClipRect.quickReject(x, y, x + width, y + height)) {
 //            SkCLZ(3);    // so we can set a break-point in the debugger
             return;
         }
     }
 */
     if (NULL == glyph->fPlot) {
         if (!fStrike->glyphTooLargeForAtlas(glyph)) {
             if (fStrike->addGlyphToAtlas(glyph, scaler)) {
                 goto HAS_ATLAS;
             }
 
             // try to clear out an unused plot before we flush
-            if (fContext->getFontCache()->freeUnusedPlot(fStrike) &&
+            if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
                 fStrike->addGlyphToAtlas(glyph, scaler)) {
                 goto HAS_ATLAS;
             }
 
             if (c_DumpFontCache) {
 #ifdef SK_DEVELOPER
                 fContext->getFontCache()->dump();
 #endif
             }
 
             // before we purge the cache, we must flush any accumulated draws
             this->flush();
             fContext->flush();
 
             // we should have an unused plot now
-            if (fContext->getFontCache()->freeUnusedPlot(fStrike) &&
+            if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
                 fStrike->addGlyphToAtlas(glyph, scaler)) {
                 goto HAS_ATLAS;
             }
         }
 
         if (NULL == glyph->fPath) {
             SkPath* path = SkNEW(SkPath);
             if (!scaler->getGlyphPath(glyph->glyphID(), path)) {
                 // flag the glyph as being dead?
                 delete path;
@@ skipping 193 matching lines @@
         fVertexBounds.setLargestInverted();
     }
 }
 
 inline void GrDistanceFieldTextContext::finish() {
     this->flush();
 
     GrTextContext::finish();
 }