OmniboxTextView: fix gcc error for structure initialization

It looks like there is bug in GCC 6, which cannot go through
structure initialization normally.

Thus, instead of a default initialization of one of the members,
explicitly initialize it to a default value.

Change-Id: Ia55cc6658e6b6b2f8a80c2582dd28f001c9e648c
Reviewed-on: https://chromium-review.googlesource.com/1213181Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Maksim Sisov <msisov@igalia.com>
Cr-Commit-Position: refs/heads/master@{#589614}

chrome/browser/ui/views/omnibox/omnibox_text_view.cc

@@ -175,7 +175,8 @@ void ApplyTextStyleForType(SuggestionAnswer::TextStyle text_style,
       style = {part_color, .baseline = gfx::SUPERIOR};
       break;
     case SuggestionAnswer::TextStyle::BOLD:
-      style = {part_color, .weight = gfx::Font::Weight::BOLD};
+      style = {part_color, .baseline = gfx::NORMAL_BASELINE,
+               .weight = gfx::Font::Weight::BOLD};
       break;
     case SuggestionAnswer::TextStyle::NORMAL:
     case SuggestionAnswer::TextStyle::NORMAL_DIM: