Bug 1629732 - Fix non-unified build errors in layout/mathml. r=tnikkel

Differential Revision: https://phabricator.services.mozilla.com/D71247

layout/mathml/nsMathMLmfracFrame.cpp

@@ -18,6 +18,7 @@
 #include "mozilla/dom/MathMLElement.h"
 #include <algorithm>
 #include "gfxMathTable.h"
+#include "gfxTextRun.h"
 
 using namespace mozilla;
 using namespace mozilla::gfx;

layout/mathml/nsMathMLmmultiscriptsFrame.cpp

@@ -12,6 +12,7 @@
 #include <algorithm>
 #include "gfxContext.h"
 #include "gfxMathTable.h"
+#include "gfxTextRun.h"
 
 using namespace mozilla;