Formalize Connection CallQuality report APIs

Promote Connection#EVENT_CALL_QUALITY_REPORT as well as
Connection#EXTRA_CALL_QUALITY_REPORT into proper system APIs. These are
used by Telephony to send the call quality report from Telephony over to
Telecom which is retreived by CallDiagnosticService.

Bug: 322513691
Bug: 311773409
Test: atest CtsCallDiagnosticService
Change-Id: I06c0cd021d1de3ff54ead59fb7483547599193e3

core/api/system-current.txt

@@ -13397,7 +13397,9 @@ package android.telecom {
     method public void setTelecomCallId(@NonNull String);
     field public static final int CAPABILITY_CONFERENCE_HAS_NO_CHILDREN = 2097152; // 0x200000
     field public static final int CAPABILITY_SPEED_UP_MT_AUDIO = 262144; // 0x40000
+    field @FlaggedApi("com.android.server.telecom.flags.telecom_resolve_hidden_dependencies") public static final String EVENT_CALL_QUALITY_REPORT = "android.telecom.event.CALL_QUALITY_REPORT";
     field public static final String EVENT_DEVICE_TO_DEVICE_MESSAGE = "android.telecom.event.DEVICE_TO_DEVICE_MESSAGE";
+    field @FlaggedApi("com.android.server.telecom.flags.telecom_resolve_hidden_dependencies") public static final String EXTRA_CALL_QUALITY_REPORT = "android.telecom.extra.CALL_QUALITY_REPORT";
     field public static final String EXTRA_DEVICE_TO_DEVICE_MESSAGE_TYPE = "android.telecom.extra.DEVICE_TO_DEVICE_MESSAGE_TYPE";
     field public static final String EXTRA_DEVICE_TO_DEVICE_MESSAGE_VALUE = "android.telecom.extra.DEVICE_TO_DEVICE_MESSAGE_VALUE";
     field public static final String EXTRA_DISABLE_ADD_CALL = "android.telecom.extra.DISABLE_ADD_CALL";

telecomm/java/android/telecom/Connection.java

@@ -21,6 +21,7 @@ import static android.Manifest.permission.MODIFY_PHONE_STATE;
 import android.Manifest;
 import android.annotation.CallbackExecutor;
 import android.annotation.ElapsedRealtimeLong;
+import android.annotation.FlaggedApi;
 import android.annotation.IntDef;
 import android.annotation.IntRange;
 import android.annotation.NonNull;
@@ -56,6 +57,7 @@ import android.view.Surface;
 import com.android.internal.os.SomeArgs;
 import com.android.internal.telecom.IVideoCallback;
 import com.android.internal.telecom.IVideoProvider;
+import com.android.server.telecom.flags.Flags;
 
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -1015,9 +1017,11 @@ public abstract class Connection extends Conferenceable {
     /**
      * Connection event used to communicate a {@link android.telephony.CallQuality} report from
      * telephony to Telecom for relaying to
-     * {@link DiagnosticCall#onCallQualityReceived(CallQuality)}.
+     * {@link CallDiagnostics#onCallQualityReceived(CallQuality)}.
      * @hide
      */
+    @SystemApi
+    @FlaggedApi(Flags.FLAG_TELECOM_RESOLVE_HIDDEN_DEPENDENCIES)
     public static final String EVENT_CALL_QUALITY_REPORT =
             "android.telecom.event.CALL_QUALITY_REPORT";
 
@@ -1026,6 +1030,8 @@ public abstract class Connection extends Conferenceable {
      * {@link android.telephony.CallQuality} data.
      * @hide
      */
+    @SystemApi
+    @FlaggedApi(Flags.FLAG_TELECOM_RESOLVE_HIDDEN_DEPENDENCIES)
     public static final String EXTRA_CALL_QUALITY_REPORT =
             "android.telecom.extra.CALL_QUALITY_REPORT";