Replace "safeMode" with a more specific name "vmSafeMode" in the public API.

Bug: 2553512
Change-Id: Id0dad80ecdcb8c7430dcf1ac26132ccd9c0770f5
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index 3be4cebd..fb52d2e 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -1510,7 +1510,7 @@
         }
 
         if (sa.getBoolean(
-                com.android.internal.R.styleable.AndroidManifestApplication_safeMode,
+                com.android.internal.R.styleable.AndroidManifestApplication_vmSafeMode,
                 false)) {
             ai.flags |= ApplicationInfo.FLAG_VM_SAFE_MODE;
         }