If activity is an alias get maxRecents from target

Activity aliases do not pick up values in the PackageParser. The
actual values should come from the target activity instead.

Also ActivityInfo now propagates maxRecents in copy constructor
and across Binder calls (via parcelling).

Fixes bug 17391328.

Change-Id: I35d248032eca7557528c9d499b3b38f27c713d09

core/java/android/content/pm/ActivityInfo.java

@@ -657,6 +657,7 @@ public class ActivityInfo extends ComponentInfo
         softInputMode = orig.softInputMode;
         uiOptions = orig.uiOptions;
         parentActivityName = orig.parentActivityName;
+        maxRecents = orig.maxRecents;
     }
     
     /**
@@ -728,6 +729,7 @@ public class ActivityInfo extends ComponentInfo
         dest.writeInt(uiOptions);
         dest.writeString(parentActivityName);
         dest.writeInt(persistableMode);
+        dest.writeInt(maxRecents);
     }
 
     public static final Parcelable.Creator<ActivityInfo> CREATOR
@@ -754,5 +756,6 @@ public class ActivityInfo extends ComponentInfo
         uiOptions = source.readInt();
         parentActivityName = source.readString();
         persistableMode = source.readInt();
+        maxRecents = source.readInt();
     }
 }

core/java/android/content/pm/PackageParser.java

@@ -3308,7 +3308,8 @@ public class PackageParser {
         info.softInputMode = target.info.softInputMode;
         info.uiOptions = target.info.uiOptions;
         info.parentActivityName = target.info.parentActivityName;
-        
+        info.maxRecents = target.info.maxRecents;
+
         Activity a = new Activity(mParseActivityAliasArgs, info);
         if (outError[0] != null) {
             sa.recycle();