Updating platform SDK version for R

  * Update SDK versions

Test: build + boot

 bug:150281259

Exempt-From-Owner-Approval: merge conflict resolution

Change-Id: I30d7cda3c95327c4080e279e876129eb9e6a8091
Merged-In: I30d7cda3c95327c4080e279e876129eb9e6a8091
diff --git a/android/api_levels.go b/android/api_levels.go
index b6296d8..0872066 100644
--- a/android/api_levels.go
+++ b/android/api_levels.go
@@ -73,6 +73,7 @@
 			"O-MR1": 27,
 			"P":     28,
 			"Q":     29,
+			"R":     30,
 		}
 		for i, codename := range config.PlatformVersionActiveCodenames() {
 			apiLevelsMap[codename] = baseApiLevel + i