Handle if the printing app is killed while saving to PDF.

When saving to PDF we bring up the file picker UI which covers
the print UI. In this case the printing app may get killed as
it is not in the forground (the system is bound to the print
spooler so it cannot get killed). If that happens we are ending
up with an empty file. However, if the file chooser UI is up
we already have everything from the app we need and it dying
does not matter. This change takes care if ignoring printing
app death while saving to PDF.

bug:17922948

Change-Id: I10d808e3c3e93e850dbc2a948f2482381a887928

packages/PrintSpooler/src/com/android/printspooler/ui/PrintActivity.java

@@ -286,7 +286,9 @@ public class PrintActivity extends Activity implements RemotePrintDocument.Updat
                 mFileProvider, new RemotePrintDocument.RemoteAdapterDeathObserver() {
             @Override
             public void onDied() {
-                if (isFinishing()) {
+                // If we are finishing or we are in a state that we do not need any
+                // data from the printing app, then no need to finish.
+                if (isFinishing() || (isFinalState(mState) && !mPrintedDocument.isUpdating())) {
                     return;
                 }
                 setState(STATE_PRINT_CANCELED);