Support package private shared isolated processes.

BUG: 312706530
Test: atest ActiveServicesTest
Test: atest android.externalservice.cts.SharedIsolatedServiceTest
Change-Id: I1e9a9fd83a3c56b1a17d926c128eca6b3ac4998a
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index ce311d0..0916227 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -74,6 +74,7 @@
     ":android.chre.flags-aconfig-java{.generated_srcjars}",
     ":android.speech.flags-aconfig-java{.generated_srcjars}",
     ":power_flags_lib{.generated_srcjars}",
+    ":android.content.flags-aconfig-java{.generated_srcjars}",
 ]
 
 filegroup {
@@ -940,3 +941,16 @@
     aconfig_declarations: "power_flags",
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
+
+// Content
+aconfig_declarations {
+    name: "android.content.flags-aconfig",
+    package: "android.content.flags",
+    srcs: ["core/java/android/content/flags/flags.aconfig"],
+}
+
+java_aconfig_library {
+    name: "android.content.flags-aconfig-java",
+    aconfig_declarations: "android.content.flags-aconfig",
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}