Installd: Fully decouple pre- and post-bootcomplete properties

Do not fall back to dalvik.vm.dex2oat-threads if
dalvik.vm.boot-dex2oat-threads is not set. Also do not ever use
the value of dalvik.vm.image-dex2oat-threads. Instead use the
default behavior of dex2oat in that situation.

Change-Id: I42e60996341414b95b8df2d243d5e07f7f5ff9b6
diff --git a/cmds/installd/commands.cpp b/cmds/installd/commands.cpp
index 906a09b..d2abd40 100644
--- a/cmds/installd/commands.cpp
+++ b/cmds/installd/commands.cpp
@@ -719,24 +719,11 @@
                                                           dex2oat_compiler_filter_flag, NULL) > 0;
 
     char dex2oat_threads_buf[PROPERTY_VALUE_MAX];
-    bool have_dex2oat_threads_flag = false;
-    if (!post_bootcomplete) {
-        have_dex2oat_threads_flag = property_get("dalvik.vm.boot-dex2oat-threads",
-                                                 dex2oat_threads_buf,
-                                                 NULL) > 0;
-        // If there's no boot property, fall back to the image property.
-        if (!have_dex2oat_threads_flag) {
-            have_dex2oat_threads_flag = property_get("dalvik.vm.image-dex2oat-threads",
-                                                     dex2oat_threads_buf,
-                                                     NULL) > 0;
-        }
-        // If there's neither, fall back to the default property.
-    }
-    if (!have_dex2oat_threads_flag) {
-        have_dex2oat_threads_flag = property_get("dalvik.vm.dex2oat-threads",
-                                                 dex2oat_threads_buf,
-                                                 NULL) > 0;
-    }
+    bool have_dex2oat_threads_flag = property_get(post_bootcomplete
+                                                      ? "dalvik.vm.dex2oat-threads"
+                                                      : "dalvik.vm.boot-dex2oat-threads",
+                                                  dex2oat_threads_buf,
+                                                  NULL) > 0;
     char dex2oat_threads_arg[PROPERTY_VALUE_MAX + 2];
     if (have_dex2oat_threads_flag) {
         sprintf(dex2oat_threads_arg, "-j%s", dex2oat_threads_buf);