Assign shared libraries stable package ids

When a shared library package is loaded into an AssetManager, the
shared library will be assigned a unique package id. Subsequent
AssetManaagers that load a shared library of the same package name
as the original shared library will use previously assigned package
name. Shared libraries will have stable package ids throughout the
lifetime of application.

Bug: 140790224
Bug: 128496033
Test: libandroidfw_tests
Test: third-party app no longer crashes on open
Test: atest CtsHostsideWebViewTests
Change-Id: Idc0315be21ea00b74d1a918b7083ad655104c008
diff --git a/libs/androidfw/tests/AssetManager2_test.cpp b/libs/androidfw/tests/AssetManager2_test.cpp
index b3190be..2f6f3df 100644
--- a/libs/androidfw/tests/AssetManager2_test.cpp
+++ b/libs/androidfw/tests/AssetManager2_test.cpp
@@ -214,6 +214,25 @@
   EXPECT_EQ(fix_package_id(appaslib::R::array::integerArray1, 0x02), value.data);
 }
 
+TEST_F(AssetManager2Test, AssignsUnchangingPackageIdToSharedLibrary) {
+  DynamicLibManager lib_manager;
+  AssetManager2 assetmanager(&lib_manager);
+  assetmanager.SetApkAssets(
+      {lib_one_assets_.get(), lib_two_assets_.get(), libclient_assets_.get()});
+
+  AssetManager2 assetmanager2(&lib_manager);
+  assetmanager2.SetApkAssets(
+      {lib_two_assets_.get(), lib_one_assets_.get(), libclient_assets_.get()});
+
+  uint32_t res_id = assetmanager.GetResourceId("com.android.lib_one:string/foo");
+  ASSERT_NE(0U, res_id);
+
+  uint32_t res_id_2 = assetmanager2.GetResourceId("com.android.lib_one:string/foo");
+  ASSERT_NE(0U, res_id_2);
+
+  ASSERT_EQ(res_id, res_id_2);
+}
+
 TEST_F(AssetManager2Test, GetSharedLibraryResourceName) {
   AssetManager2 assetmanager;
   assetmanager.SetApkAssets({lib_one_assets_.get()});