Bump up AOSP Contacts app version to 1.5.10.

bug:28880104
Change-Id: Ibdaf333d53e33f7c4690f82b9a8b93307ca0dd5a
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index e5c10c9..1987fb2 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -16,8 +16,8 @@
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.contacts"
-    android:versionCode="10509"
-    android:versionName="1.5.9">
+    android:versionCode="10510"
+    android:versionName="1.5.10">
 
     <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="25" />