Implement window.print() on Android

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

Index: printing/android/java/src/org/chromium/printing/PrintingControllerImpl.java
diff --git a/printing/android/java/src/org/chromium/printing/PrintingControllerImpl.java b/printing/android/java/src/org/chromium/printing/PrintingControllerImpl.java
index 16e045616abde9cf6d3c758e141c17de4e057b9a..eae57b688d582f0addc7d6710abf927fd53c609f 100644
--- a/printing/android/java/src/org/chromium/printing/PrintingControllerImpl.java
+++ b/printing/android/java/src/org/chromium/printing/PrintingControllerImpl.java
@@ -10,6 +10,7 @@ import android.os.ParcelFileDescriptor;
 import android.print.PageRange;
 import android.print.PrintAttributes;
 import android.print.PrintDocumentInfo;
+import android.util.Log;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.printing.PrintDocumentAdapterWrapper.PdfGenerator;
@@ -169,7 +170,9 @@ public class PrintingControllerImpl implements PrintingController, PdfGenerator
 
     @Override
     public void startPrint(final Printable printable, PrintManagerDelegate printManager) {
+        Log.i("DGN", "PrintingControllerImpl#startPrint" + (mIsBusy ? " (BUSY)" : ""));
         if (mIsBusy) return;
+
         mIsBusy = true;
         mPrintable = printable;
         mPrintDocumentAdapterWrapper.print(printManager, printable.getTitle());
@@ -202,6 +205,8 @@ public class PrintingControllerImpl implements PrintingController, PdfGenerator
             CancellationSignal cancellationSignal,
             PrintDocumentAdapterWrapper.LayoutResultCallbackWrapper callback,
             Bundle metadata) {
+        Log.i("DGN", "PrintingControllerImpl#onLayout");
+
         // NOTE: Chrome printing just supports one DPI, whereas Android has both vertical and
         // horizontal.  These two values are most of the time same, so we just pass one of them.
         mDpi = newAttributes.getResolution().getHorizontalDpi();
@@ -268,6 +273,8 @@ public class PrintingControllerImpl implements PrintingController, PdfGenerator
             return;
         }
 
+        Log.i("DGN", "PrintingControllerImpl#onWrite");
+
         // TODO(cimamoglu): Make use of CancellationSignal.
         mOnWriteCallback = callback;
 
@@ -303,6 +310,8 @@ public class PrintingControllerImpl implements PrintingController, PdfGenerator
 
     @Override
     public void onFinish() {
+        Log.i("DGN", "PrintingControllerImpl#onFinish");
+

[dgn, 2014/11/20 12:26:16]

Plan B is calling a nativeMethod there, that would Send the reply_msg for
scriptedprints

         mLastKnownMaxPages = PrintDocumentInfo.PAGE_COUNT_UNKNOWN;
         mPages = null;