don't include liblog to APEXes

liblog is a platform library that provides stable C API. There is no
need to include the library, especialy by statically linking to it, in
any APEX. It not only wastes the storage/ram, but also is incorrect
because the socket interface to logd which is implemented in liblog is
not guaranteed to be stable.

Fixing this issue by converting static_libs: ["liblog"] into
shared_libs: ["liblog"], in which case the dependency to the library
is satisfied via the stub variant of the library.

As a result, we could restrict the availablity of the library to
the platform and the runtime APEX.

Exempt-From-Owner-Approval: already approved when this was in internal
master (ag/10572699)

Bug: http://b/151051671
Bug: http://b/150827719
Test: m
Change-Id: I5aab863cb12b8767b6979255c247000a59355b0e

adb/Android.bp

@@ -589,7 +589,6 @@ cc_binary {
         "libcrypto_utils",
         "libcutils_sockets",
         "libdiagnose_usb",
-        "liblog",
         "libmdnssd",
         "libminijail",
         "libprotobuf-cpp-lite",
@@ -603,6 +602,7 @@ cc_binary {
         "libadbd_auth",
         "libadbd_fs",
         "libcrypto",
+        "liblog",
     ],
 
     target: {

liblog/Android.bp

@@ -121,8 +121,12 @@ cc_library {
     logtags: ["event.logtags"],
     compile_multilib: "both",
     apex_available: [
-        "//apex_available:anyapex",
         "//apex_available:platform",
+        // liblog is exceptionally available to the runtime APEX
+        // because the dynamic linker has to use it statically.
+        // See b/151051671
+        "com.android.runtime",
+        // DO NOT add more apex names here
     ],
 }
 

libstats/push_compat/Android.bp

@@ -35,6 +35,8 @@ cc_defaults {
     header_libs: ["libstatssocket_headers"],
     static_libs: [
         "libbase",
+    ],
+    shared_libs: [
         "liblog",
         "libutils",
     ],