Use FontFamily/FontCollection::create() in hwui.

Minikin will hide FontFamily/FontCollection constructors.
This CL updates hwui to use create() instead.

Bug: 174672300
Test: m -j
Change-Id: Ie910b0d7608df681443f862aa67d402809c38514
diff --git a/libs/hwui/jni/FontFamily.cpp b/libs/hwui/jni/FontFamily.cpp
index acc1b04..c146ada 100644
--- a/libs/hwui/jni/FontFamily.cpp
+++ b/libs/hwui/jni/FontFamily.cpp
@@ -85,9 +85,9 @@
     if (builder->fonts.empty()) {
         return 0;
     }
-    std::shared_ptr<minikin::FontFamily> family = std::make_shared<minikin::FontFamily>(
-            builder->langId, builder->variant, std::move(builder->fonts),
-            true /* isCustomFallback */);
+    std::shared_ptr<minikin::FontFamily> family =
+            minikin::FontFamily::create(builder->langId, builder->variant,
+                                        std::move(builder->fonts), true /* isCustomFallback */);
     if (family->getCoverage().length() == 0) {
         return 0;
     }