Fix edge case with status message (issue 7343848)

-> When an unimportant message is set, we need to clear the security string
   so that battery / owner info takes precedence at that point.

Change-Id: I3f86b0c2cc8fb2fb0023fce77a7725d8ada96d9e

Author: Adam Cohen

policy/src/com/android/internal/policy/impl/keyguard/KeyguardStatusViewManager.java

@@ -189,14 +189,16 @@ void resetStatusInfo() {
     }
 
     public void setMessage(CharSequence msg, boolean important) {
-        if (!important) return;
-        mSecurityMessageContents = msg;
+        if (!important) {
+            mSecurityMessageContents = "";
+        } else {
+            mSecurityMessageContents = msg;
+        }
         securityMessageChanged();
     }
 
     public void setMessage(int resId, boolean important) {
-        if (!important) return;
-        if (resId != 0) {
+        if (resId != 0 && important) {
             mSecurityMessageContents = getContext().getResources().getText(resId);
         } else {
             mSecurityMessageContents = "";
@@ -205,8 +207,7 @@ public void setMessage(int resId, boolean important) {
     }
 
     public void setMessage(int resId, boolean important, Object... formatArgs) {
-        if (!important) return;
-        if (resId != 0) {
+        if (resId != 0 && important) {
             mSecurityMessageContents = getContext().getString(resId, formatArgs);
         } else {
             mSecurityMessageContents = "";