Remove all apps page

Instead move the functionality back into overflow menu as show/hide
system apps. Also move the reset app preferences from advanced to
the overflow menu.

Bug: 20210160
Change-Id: Ied573e1f7dfc438b06642ee2af8f11868130ba3b

src/com/android/settings/applications/ApplicationsState.java

@@ -349,6 +349,27 @@ public class ApplicationsState {
         }
     };
 
+    public static class CompoundFilter implements AppFilter {
+        private final AppFilter mFirstFilter;
+        private final AppFilter mSecondFilter;
+
+        public CompoundFilter(AppFilter first, AppFilter second) {
+            mFirstFilter = first;
+            mSecondFilter = second;
+        }
+
+        @Override
+        public void init() {
+            mFirstFilter.init();
+            mSecondFilter.init();
+        }
+
+        @Override
+        public boolean filterApp(AppEntry info) {
+            return mFirstFilter.filterApp(info) && mSecondFilter.filterApp(info);
+        }
+    }
+
     final Context mContext;
     final PackageManager mPm;
     final IPackageManager mIpm;