Fix issue #3431230: "am" debugging commands failing on -userdebug builds

Change-Id: I6b5a8bf68d3bd76c7331ee97bab9a68b5033cb5a
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index ea49661..e6dfb7f 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -180,6 +180,7 @@
     static final int STOCK_PM_FLAGS = PackageManager.GET_SHARED_LIBRARY_FILES;
     
     private static final String SYSTEM_SECURE = "ro.secure";
+    private static final String SYSTEM_DEBUGGABLE = "ro.debuggable";
 
     // This is the maximum number of application processes we would like
     // to have running.  Due to the asynchronous nature of things, we can
@@ -12940,8 +12941,8 @@
                     throw new IllegalArgumentException("Unknown process: " + process);
                 }
                 
-                boolean isSecure = "1".equals(SystemProperties.get(SYSTEM_SECURE, "0"));
-                if (isSecure) {
+                boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
+                if (!isDebuggable) {
                     if ((proc.info.flags&ApplicationInfo.FLAG_DEBUGGABLE) == 0) {
                         throw new SecurityException("Process not debuggable: " + proc);
                     }
@@ -13002,8 +13003,8 @@
                     throw new IllegalArgumentException("Unknown process: " + process);
                 }
 
-                boolean isSecure = "1".equals(SystemProperties.get(SYSTEM_SECURE, "0"));
-                if (isSecure) {
+                boolean isDebuggable = "1".equals(SystemProperties.get(SYSTEM_DEBUGGABLE, "0"));
+                if (!isDebuggable) {
                     if ((proc.info.flags&ApplicationInfo.FLAG_DEBUGGABLE) == 0) {
                         throw new SecurityException("Process not debuggable: " + proc);
                     }