Add ninePatch support to Canvas.h

Change-Id: Ic095291fe55911c6501c1bdefa4b8da973c77319
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index e5bc664..b3b3479 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -23,6 +23,7 @@
     utils/Blur.cpp \
     utils/GLUtils.cpp \
     utils/LinearAllocator.cpp \
+    utils/NinePatchImpl.cpp \
     AmbientShadow.cpp \
     AnimationContext.cpp \
     Animator.cpp \