Merge 142928 "Crash when selecting a HarfBuzz text run with SVG ..."

Source/WebCore/platform/graphics/harfbuzz/HarfBuzzShaper.cpp

 /*
  * Copyright (c) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 305 matching lines @@
 bool HarfBuzzShaper::shapeHarfBuzzRuns(bool shouldSetDirection)
 {
     HarfBuzzScopedPtr<hb_buffer_t> harfBuzzBuffer(hb_buffer_create(), hb_buffer_destroy);
 
     hb_buffer_set_unicode_funcs(harfBuzzBuffer.get(), hb_icu_get_unicode_funcs());
 
     for (unsigned i = 0; i < m_harfBuzzRuns.size(); ++i) {
         unsigned runIndex = m_run.rtl() ? m_harfBuzzRuns.size() - i - 1 : i;
         HarfBuzzRun* currentRun = m_harfBuzzRuns[runIndex].get();
         const SimpleFontData* currentFontData = currentRun->fontData();
+        if (currentFontData->isSVGFont())
+            return false;
 
         hb_buffer_set_script(harfBuzzBuffer.get(), currentRun->script());
         if (shouldSetDirection)
             hb_buffer_set_direction(harfBuzzBuffer.get(), currentRun->rtl() ? HB_DIRECTION_RTL : HB_DIRECTION_LTR);
 
         // Add a space as pre-context to the buffer. This prevents showing dotted-circle
         // for combining marks at the beginning of runs.
         static const uint16_t preContext = ' ';
         hb_buffer_add_utf16(harfBuzzBuffer.get(), &preContext, 1, 1, 0);
 
@@ skipping 198 matching lines @@
     if (!foundToX)
         toX = m_run.rtl() ? 0 : m_totalWidth;
 
     // Using floorf() and roundf() as the same as mac port.
     if (fromX < toX)
         return FloatRect(floorf(point.x() + fromX), point.y(), roundf(toX - fromX), height);
     return FloatRect(floorf(point.x() + toX), point.y(), roundf(fromX - toX), height);
 }
 
 } // namespace WebCore