Configurable SoftAP: Add System API.

This adds a facility for system apps (with NETWORK_SETUP_WIZARD
or NETWORK_SETTINGS permission) to have more control over hotspot
parameters, while allowing them to use local-only mode and the LOHS
callback API for status updates.

Linters give conflicting advice about parameter ordering. With
startLocalOnlyHotspot(config, executor, callback), we satisfy
    (+) put callback last (enforced at compile time)
    (+) use Executor instead of Handler
    (+) put most meaningful argument first
while we're not satisfying
    (-) put executor last as it is a SAM (doesn't seem to make much
    sense to instantiate executor as SAM anyway, users are more likely
    to get an instance from elsewhere)
    (-) for overloads, add new arguments at the end.

Bug: 132705022
Test: atest SoftApConfigurationTest android.net.wifi.WifiManagerTest
Test: atest android.net.wifi.cts.WifiManagerTest (not tested due to
failures on emulator b/143120756)
Change-Id: Ia189b3664b47a253e160acb71eafab4f217649eb
diff --git a/api/current.txt b/api/current.txt
index 66b17cc..ea27baf 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -30036,7 +30036,7 @@
     method public void setTdlsEnabled(java.net.InetAddress, boolean);
     method public void setTdlsEnabledWithMacAddress(String, boolean);
     method @Deprecated public boolean setWifiEnabled(boolean);
-    method public void startLocalOnlyHotspot(android.net.wifi.WifiManager.LocalOnlyHotspotCallback, @Nullable android.os.Handler);
+    method @RequiresPermission(allOf={android.Manifest.permission.CHANGE_WIFI_STATE, android.Manifest.permission.ACCESS_FINE_LOCATION}) public void startLocalOnlyHotspot(android.net.wifi.WifiManager.LocalOnlyHotspotCallback, @Nullable android.os.Handler);
     method @Deprecated public boolean startScan();
     method @Deprecated public void startWps(android.net.wifi.WpsInfo, android.net.wifi.WifiManager.WpsCallback);
     method @Deprecated public int updateNetwork(android.net.wifi.WifiConfiguration);
diff --git a/api/system-current.txt b/api/system-current.txt
index adf9e39..a3001d5 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -4734,6 +4734,24 @@
     field @Deprecated public byte id;
   }
 
+  public final class SoftApConfiguration implements android.os.Parcelable {
+    method public int describeContents();
+    method @Nullable public android.net.MacAddress getBssid();
+    method @Nullable public String getSsid();
+    method @Nullable public String getWpa2Passphrase();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.wifi.SoftApConfiguration> CREATOR;
+  }
+
+  public static final class SoftApConfiguration.Builder {
+    ctor public SoftApConfiguration.Builder();
+    ctor public SoftApConfiguration.Builder(@NonNull android.net.wifi.SoftApConfiguration);
+    method @NonNull public android.net.wifi.SoftApConfiguration build();
+    method @NonNull public android.net.wifi.SoftApConfiguration.Builder setBssid(@Nullable android.net.MacAddress);
+    method @NonNull public android.net.wifi.SoftApConfiguration.Builder setSsid(@Nullable String);
+    method @NonNull public android.net.wifi.SoftApConfiguration.Builder setWpa2Passphrase(@Nullable String);
+  }
+
   public final class WifiClient implements android.os.Parcelable {
     method public int describeContents();
     method @NonNull public android.net.MacAddress getMacAddress();
@@ -4789,6 +4807,7 @@
     method @RequiresPermission(android.Manifest.permission.CHANGE_WIFI_STATE) public boolean setWifiApConfiguration(android.net.wifi.WifiConfiguration);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD}) public void startEasyConnectAsConfiguratorInitiator(@NonNull String, int, int, @NonNull java.util.concurrent.Executor, @NonNull android.net.wifi.EasyConnectStatusCallback);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD}) public void startEasyConnectAsEnrolleeInitiator(@NonNull String, @NonNull java.util.concurrent.Executor, @NonNull android.net.wifi.EasyConnectStatusCallback);
+    method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD}) public void startLocalOnlyHotspot(@NonNull android.net.wifi.SoftApConfiguration, @Nullable java.util.concurrent.Executor, @Nullable android.net.wifi.WifiManager.LocalOnlyHotspotCallback);
     method @RequiresPermission(android.Manifest.permission.UPDATE_DEVICE_STATS) public boolean startScan(android.os.WorkSource);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_STACK", android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK}) public boolean startSoftAp(@Nullable android.net.wifi.WifiConfiguration);
     method @RequiresPermission(anyOf={"android.permission.NETWORK_SETTINGS", android.Manifest.permission.NETWORK_SETUP_WIZARD}) public void startSubscriptionProvisioning(@NonNull android.net.wifi.hotspot2.OsuProvider, @NonNull java.util.concurrent.Executor, @NonNull android.net.wifi.hotspot2.ProvisioningCallback);
diff --git a/api/system-lint-baseline.txt b/api/system-lint-baseline.txt
index 57a853a..a907fa6 100644
--- a/api/system-lint-baseline.txt
+++ b/api/system-lint-baseline.txt
@@ -257,6 +257,8 @@
     
 SamShouldBeLast: android.net.ConnectivityManager#createSocketKeepalive(android.net.Network, android.net.IpSecManager.UdpEncapsulationSocket, java.net.InetAddress, java.net.InetAddress, java.util.concurrent.Executor, android.net.SocketKeepalive.Callback):
     
+SamShouldBeLast: android.net.wifi.WifiManager#startLocalOnlyHotspot(android.net.wifi.SoftApConfiguration, java.util.concurrent.Executor, android.net.wifi.WifiManager.LocalOnlyHotspotCallback):
+    
 SamShouldBeLast: android.net.wifi.rtt.WifiRttManager#startRanging(android.net.wifi.rtt.RangingRequest, java.util.concurrent.Executor, android.net.wifi.rtt.RangingResultCallback):
     
 SamShouldBeLast: android.nfc.NfcAdapter#enableReaderMode(android.app.Activity, android.nfc.NfcAdapter.ReaderCallback, int, android.os.Bundle):