Start adding build rules for ravenwood

- Add "framework-minus-apex.ravenwood".
- Update the behavior of: --default-throw:
  - Now this will "keep" the subject classes and fields.
- When a 'throw' directive is specified on a static initializer,
  it's now handled as 'keep', because otherwise the class
  wouldn't be usable.

Test: ./scripts/run-all-tests.sh
Test: m framework-minus-apex.ravenwood
Bug: 292141694
Change-Id: If4d650dc175a5a78cf8844dfed2217c19f2d5790
diff --git a/Android.bp b/Android.bp
index b1b332a..a507465a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -64,6 +64,7 @@
     srcs: [
         // Java/AIDL sources under frameworks/base
         ":framework-annotations",
+        ":ravenwood-annotations",
         ":framework-blobstore-sources",
         ":framework-core-sources",
         ":framework-drm-sources",
@@ -284,6 +285,7 @@
         enforce_permissions_exceptions: [
             // Do not add entries to this list.
             ":framework-annotations",
+            ":ravenwood-annotations",
             ":framework-blobstore-sources",
             ":framework-core-sources",
             ":framework-drm-sources",
@@ -409,7 +411,6 @@
         "audiopolicy-aidl-java",
         "sounddose-aidl-java",
         "modules-utils-expresslog",
-        "hoststubgen-annotations",
     ],
 }
 
@@ -838,4 +839,5 @@
     "AconfigFlags.bp",
     "ProtoLibraries.bp",
     "TestProtoLibraries.bp",
+    "Ravenwood.bp",
 ]