Update LayoutLib revision number for Preview 3

Change-Id: I474f4cb386b85f3f00627fd114a52f93e80b6e15
diff --git a/sdk/platform_source.prop_template b/sdk/platform_source.prop_template
index a611014..09d123d 100644
--- a/sdk/platform_source.prop_template
+++ b/sdk/platform_source.prop_template
@@ -2,9 +2,9 @@
 Pkg.UserSrc=false
 Platform.Version=${PLATFORM_VERSION}
 Platform.CodeName=MNC
-Pkg.Revision=2
+Pkg.Revision=3
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 Layoutlib.Api=15
-Layoutlib.Revision=1
+Layoutlib.Revision=3
 Platform.MinToolsRev=22