Move manifest generation logic into static_java_library.mk

Previously a manifest file would be generated for static_java_library.mk
and package_internal.mk. For pacakge_internal.mk, this would cause
cryptic errors like b/188612215#2

With this CL, a manifest file would only be generated for java_library
with need_compile_res == true. The advantages are
1. No redundant generation for java_library with need_compile_res == false
(i.e. modules that do not require aapt2)
2. Force devs to provide manifest for android_app, and not silently
generating one for them

Bug: 188652897
Test: TH
Test: m nothing in tv-dev, car-dev

Change-Id: I69a23e373f1b4ac1569ae5b1d36067bfc0dadc05
diff --git a/core/package_internal.mk b/core/package_internal.mk
index 800dbbc..8199ad2 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -97,6 +97,14 @@
 endif
 
 include $(BUILD_SYSTEM)/force_aapt2.mk
+# validate that app contains a manifest file for aapt2
+ifeq (,$(strip $(LOCAL_MANIFEST_FILE)$(LOCAL_FULL_MANIFEST_FILE)))
+  ifeq (,$(wildcard $(LOCAL_PATH)/AndroidManifest.xml))
+    $(call pretty-error,App missing manifest file which is required by aapt2. \
+Provide a manifest file by either setting LOCAL_MANIFEST_FILE in Android.mk \
+or via a AndroidManifest.xml in this directory)
+  endif
+endif
 
 # Process Support Library dependencies.
 include $(BUILD_SYSTEM)/support_libraries.mk