android.test.mock is built with much less number of sources

android.test.mock is built with its own sources plus a small number of
framework sources that provides private APIs that the library's APIs
have references to. Previously, it was built with the entire framework
sources which is too many and should have slowed the build performance.

Bug: 141149570
Test: m
Change-Id: I165ffdfc053a71b323ef7058651d5908df06870f

Android.bp

@@ -34,6 +34,27 @@ filegroup {
     path: "core/java",
 }
 
+// These are subset of framework-core-sources that are needed by the
+// android.test.mock library. Ideally, the library should use public APIs only,
+// but unfortunately its API signature has some references to these private APIs.
+filegroup {
+    name: "framework-core-sources-for-test-mock",
+    srcs: [
+        "core/java/android/app/IApplicationThread.aidl",
+        "core/java/android/app/IServiceConnection.aidl",
+        "core/java/android/content/IContentProvider.java",
+        "core/java/android/content/pm/IPackageDataObserver.aidl",
+        "core/java/android/content/pm/InstantAppInfo.java",
+        "core/java/android/content/pm/KeySet.java",
+        "core/java/android/content/pm/PackageManager.java",
+        "core/java/android/content/pm/VerifierDeviceIdentity.java",
+        "core/java/android/content/res/Resources.java",
+        "core/java/android/os/storage/VolumeInfo.java",
+        "core/java/android/view/DisplayAdjustments.java",
+    ],
+    path: "core/java",
+}
+
 filegroup {
     name: "framework-drm-sources",
     srcs: [

test-mock/Android.bp

@@ -19,8 +19,14 @@
 java_sdk_library {
     name: "android.test.mock",
 
-    srcs: ["src/**/*.java"],
-    api_srcs: [":framework-all-sources"],
+    srcs: [
+        "src/**/*.java",
+        // Note: Below are NOT APIs of this library. We only take APIs under
+        // the android.test.mock package. They however provide private APIs that
+        // android.test.mock APIs references to.
+        ":framework-core-sources-for-test-mock",
+        ":framework_native_aidl",
+    ],
     libs: ["framework-all"],
 
     api_packages: [