Do not commit: debug Windows RenderText test failures.

ui/gfx/render_text_harfbuzz.cc

Index: ui/gfx/render_text_harfbuzz.cc
diff --git a/ui/gfx/render_text_harfbuzz.cc b/ui/gfx/render_text_harfbuzz.cc
index 3ee533290ca729bb9871427740e29c597c6d1489..f06ff695d7f6d534300b52057de0dff9b20b03b6 100644
--- a/ui/gfx/render_text_harfbuzz.cc
+++ b/ui/gfx/render_text_harfbuzz.cc
@@ -1077,10 +1077,12 @@ bool RenderTextHarfBuzz::CompareFamily(
     std::string* best_family,
     gfx::FontRenderParams* best_render_params,
     size_t* best_missing_glyphs) {
+  LOG(ERROR) << "XXX evaluating " << family;
   if (!ShapeRunWithFont(run, family, render_params))
     return false;
 
   const size_t missing_glyphs = run->CountMissingGlyphs();
+  LOG(ERROR) << "XXX " << missing_glyphs << " missing glyph(s)";
   if (missing_glyphs < *best_missing_glyphs) {
     *best_family = family;
     *best_render_params = render_params;
@@ -1097,10 +1099,11 @@ void RenderTextHarfBuzz::ShapeRun(internal::TextRunHarfBuzz* run) {
   FontRenderParams best_render_params;
   size_t best_missing_glyphs = std::numeric_limits<size_t>::max();
 
-  if (CompareFamily(run, primary_font.GetFontName(),
-                    primary_font.GetFontRenderParams(),
-                    &best_family, &best_render_params, &best_missing_glyphs))
-    return;
+  for (const Font& font : font_list().GetFonts()) {
+    if (CompareFamily(run, font.GetFontName(), font.GetFontRenderParams(),
+                      &best_family, &best_render_params, &best_missing_glyphs))
+      return;
+  }
 
 #if defined(OS_WIN)
   Font uniscribe_font;
@@ -1127,6 +1130,7 @@ void RenderTextHarfBuzz::ShapeRun(internal::TextRunHarfBuzz* run) {
       return;
   }
 
+  LOG(ERROR) << "XXX best was " << best_family;
   if (!best_family.empty() &&
       (best_family == run->family ||
        ShapeRunWithFont(run, best_family, best_render_params)))