Migrate SIM operation dialog from LPA to Settings

In Android R, when users enable, disable, delete, or rename a profile,
Settings calls SubscriptionManager APIs which telephony ends up to send
actions “TOGGLE_SUBSCRIPTION_PRIVILEGED”,
“DELETE_SUBSCRIPTION_PRIVILEGED”, and “RENAME_SUBSCRIPTION_PRIVILEGED”
to EuiccManager. After EuiccUiDispatcher dispatches the action, Google
LPA receives it and starts the corresponding operations and DSDS
dialogs. We can see there some back-and-forth that goes on between LPA
and telephony. In order to improve the current structure, we devided
to move the dialogs to Settings and make it call EuiccManager APIs
directly.

Bug: 160819390
Test: Manually tested eSIM profile disabling.
Design: https://docs.google.com/document/d/1wb5_hoBkZVbkXGNWHbx4Jf61swjfxsJzkytiTzJosYo/edit?usp=sharing
Change-Id: Ib933df42ca3606de2310edc4d64c3e11800a1096

src/com/android/settings/network/SwitchToEuiccSubscriptionSidecar.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.network;
+
+import android.app.FragmentManager;
+import android.app.PendingIntent;
+
+import com.android.settings.SidecarFragment;
+import com.android.settings.network.telephony.EuiccOperationSidecar;
+
+/** A headless fragment encapsulating long-running eSIM enabling/disabling operations. */
+public class SwitchToEuiccSubscriptionSidecar extends EuiccOperationSidecar {
+    private static final String TAG = "SwitchToEuiccSubscriptionSidecar";
+    private static final String ACTION_SWITCH_TO_SUBSCRIPTION =
+            "com.android.settings.network.switchToSubscription";
+
+    private PendingIntent mCallbackIntent;
+
+    /** Returns a SwitchToEuiccSubscriptionSidecar sidecar instance. */
+    public static SwitchToEuiccSubscriptionSidecar get(FragmentManager fm) {
+        return SidecarFragment.get(
+                fm, TAG, SwitchToEuiccSubscriptionSidecar.class, null /* args */);
+    }
+
+    @Override
+    public String getReceiverAction() {
+        return ACTION_SWITCH_TO_SUBSCRIPTION;
+    }
+
+    /** Returns the pendingIntent of the eSIM operations. */
+    public PendingIntent getCallbackIntent() {
+        return mCallbackIntent;
+    }
+
+    /** Starts calling EuiccManager#switchToSubscription to enable/disable the eSIM profile. */
+    public void run(int subscriptionId) {
+        setState(State.RUNNING, Substate.UNUSED);
+        mCallbackIntent = createCallbackIntent();
+        mEuiccManager.switchToSubscription(subscriptionId, mCallbackIntent);
+    }
+}