Add checks for android printing

printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java

Index: printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java
diff --git a/printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java b/printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java
index 0fd13ecfca662cd16d00ea0508bb8b127a5a81ef..7cdaeaef43777aa491954a7f1c31bbf9fec96592 100644
--- a/printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java
+++ b/printing/android/java/src/org/chromium/printing/PrintManagerDelegateImpl.java
@@ -9,13 +9,22 @@
 import android.os.Build;
 import android.print.PrintAttributes;
 import android.print.PrintDocumentAdapter;
+import android.print.PrintJob;
+import android.print.PrintJobInfo;
 import android.print.PrintManager;
+import android.text.TextUtils;
+
+import org.chromium.base.Log;
+import org.chromium.base.annotations.RemovableInRelease;
+
+import java.util.List;
 
 /**
  * An implementation of {@link PrintManagerDelegate} using the Android framework print manager.
  */
 @TargetApi(Build.VERSION_CODES.KITKAT)
 public class PrintManagerDelegateImpl implements PrintManagerDelegate {
+    private static final String TAG = "cr.printing";
     private final PrintManager mPrintManager;
 
     public PrintManagerDelegateImpl(Context context) {
@@ -25,7 +34,45 @@ public PrintManagerDelegateImpl(Context context) {
     @Override
     public void print(String printJobName, PrintDocumentAdapter documentAdapter,
             PrintAttributes attributes) {
+        dumpJobStatesForDebug();
         mPrintManager.print(printJobName, documentAdapter, attributes);
     }
 
+    @RemovableInRelease
+    private void dumpJobStatesForDebug() {
+        List<PrintJob> printJobs = mPrintManager.getPrintJobs();
+        String[] states = new String[printJobs.size()];
+
+        for (int i = 0; i < printJobs.size(); i++) {
+            String stateString;
+            switch (printJobs.get(i).getInfo().getState()) {
+                case PrintJobInfo.STATE_CREATED:
+                    stateString = "STATE_CREATED";
+                    break;
+                case PrintJobInfo.STATE_QUEUED:
+                    stateString = "STATE_QUEUED";
+                    break;
+                case PrintJobInfo.STATE_STARTED:
+                    stateString = "STATE_STARTED";
+                    break;
+                case PrintJobInfo.STATE_BLOCKED:
+                    stateString = "STATE_BLOCKED";
+                    break;
+                case PrintJobInfo.STATE_FAILED:
+                    stateString = "STATE_FAILED";
+                    break;
+                case PrintJobInfo.STATE_COMPLETED:
+                    stateString = "STATE_COMPLETED";
+                    break;
+                case PrintJobInfo.STATE_CANCELED:
+                    stateString = "STATE_CANCELED";
+                    break;
+                default:
+                    stateString = "STATE_UNKNOWN";
+                    break;
+            }
+            states[i] = stateString;
+        }
+        Log.v(TAG, "Initiating new print with states in queue: {%s}", TextUtils.join(", ", states));
+    }
 }