Add vendor_available to liblog_headers.

Renamed NDK headers to "liblog_ndk_headers"
(these names aren't used anywhere).

libutils_headers now properly export liblog_headers.

Test: with BOARD_VNDK_VERSION=current
Merged-In: I3a85385f588b84393c57fd6d1bcac620f708f0f1
Change-Id: I3a85385f588b84393c57fd6d1bcac620f708f0f1
(cherry picked from commit 42b485cc53)

liblog/Android.bp

@@ -42,6 +42,24 @@ liblog_target_sources = [
     "logd_writer.c",
 ]
 
+cc_library_headers {
+    name: "liblog_headers",
+    host_supported: true,
+    vendor_available: true,
+    export_include_dirs: ["include"],
+    target: {
+        windows: {
+            enabled: true,
+        },
+        linux_bionic: {
+            enabled: true,
+        },
+        vendor: {
+            export_include_dirs: ["include_vndk"],
+        },
+    },
+}
+
 // Shared and static library for host and device
 // ========================================================
 cc_library {
@@ -78,7 +96,8 @@ cc_library {
         },
     },
 
-    export_include_dirs: ["include"],
+    header_libs: ["liblog_headers"],
+    export_header_lib_headers: ["liblog_headers"],
 
     cflags: [
         "-Werror",
@@ -97,7 +116,7 @@ cc_library {
 }
 
 ndk_headers {
-    name: "liblog_headers",
+    name: "liblog_ndk_headers",
     from: "include/android",
     to: "android",
     srcs: ["include/android/log.h"],

libutils/Android.bp

@@ -18,10 +18,12 @@ cc_library_headers {
     host_supported: true,
 
     header_libs: [
+        "liblog_headers",
         "libsystem_headers",
         "libcutils_headers"
     ],
     export_header_lib_headers: [
+        "liblog_headers",
         "libsystem_headers",
         "libcutils_headers"
     ],
@@ -85,9 +87,6 @@ cc_library {
     shared_libs: [
         "liblog",
     ],
-    export_shared_lib_headers: [
-        "liblog",
-    ],
 
     arch: {
         mips: {