Initial attempt at jank-tracking stat collection

Is a bit naive, perhaps overly aggressive, but sorta works

Change-Id: I01a774e00dbe681439c02557d9728ae43c45ce50
diff --git a/libs/hwui/Android.common.mk b/libs/hwui/Android.common.mk
index e05dd55..5dacbb5 100644
--- a/libs/hwui/Android.common.mk
+++ b/libs/hwui/Android.common.mk
@@ -43,11 +43,13 @@
     Extensions.cpp \
     FboCache.cpp \
     FontRenderer.cpp \
+    FrameInfo.cpp \
     GammaFontRenderer.cpp \
     GlopBuilder.cpp \
     GradientCache.cpp \
     Image.cpp \
     Interpolator.cpp \
+    JankTracker.cpp \
     Layer.cpp \
     LayerCache.cpp \
     LayerRenderer.cpp \