HWUI: track upload & recent usage in font cache

FontCacheHistoryTracker should be turned off before shipping: b/31438876

bug:30427106
Change-Id: Ic26b25e790d4ee69e484ca0cb23dc9cc522b2ed3
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 70b9a43..975ac83 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -608,6 +608,10 @@
     }
 
     GpuMemoryTracker::onFrameCompleted();
+#ifdef BUGREPORT_FONT_CACHE_USAGE
+    caches.fontRenderer.getFontRenderer().historyTracker().frameCompleted();
+#endif
+
 }
 
 // Called by choreographer to do an RT-driven animation