GN(android): Add scripts & runtime logic for installing _managed apks

base/android/java/src/org/chromium/base/BaseChromiumApplication.java

Index: base/android/java/src/org/chromium/base/BaseChromiumApplication.java
diff --git a/base/android/java/src/org/chromium/base/BaseChromiumApplication.java b/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
index 6d73c8fe63803f1b61821a8ba01fda9185f601b3..24816d396842435bfc82f5878c9988b3da4bf023 100644
--- a/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
+++ b/base/android/java/src/org/chromium/base/BaseChromiumApplication.java
@@ -106,6 +106,13 @@ public class BaseChromiumApplication extends Application {
             return mCallback.dispatchKeyEvent(event);
         }
     }
+
+    @Override
+    protected void attachBaseContext(Context base) {
+        super.attachBaseContext(base);
+        IncrementalInstall.initialize(this);
+    }
+
     @Override
     public void onCreate() {
         super.onCreate();