Implement window.print() on Android

chrome/browser/printing/printer_query.cc

Index: chrome/browser/printing/printer_query.cc
diff --git a/chrome/browser/printing/printer_query.cc b/chrome/browser/printing/printer_query.cc
index 6cd11ff067ef9537b1c6ee0131160c8eb8805b1d..de89aae7bc69b4e05c515c1c4f1b5db797b68b28 100644
--- a/chrome/browser/printing/printer_query.cc
+++ b/chrome/browser/printing/printer_query.cc
@@ -30,6 +30,12 @@ PrinterQuery::~PrinterQuery() {
 
 void PrinterQuery::GetSettingsDone(const PrintSettings& new_settings,
                                    PrintingContext::Result result) {
+
+  if (result == PrintingContext::TEST) {
+    LOG(INFO) << "DGN - GetSettingsDone - Received TEST";
+    return;
+  }
+
   is_print_dialog_box_shown_ = false;
   last_status_ = result;
   if (result != PrintingContext::FAILED) {
@@ -42,11 +48,25 @@ void PrinterQuery::GetSettingsDone(const PrintSettings& new_settings,
 
   if (!callback_.is_null()) {
     // This may cause reentrancy like to call StopWorker().
+    LOG(INFO) << "DGN - GetSettingsDone - Calling PrinterQuery("
+              << cookie_ <<")'s stored callback";
+
     callback_.Run();
     callback_.Reset();
   }
 }
 
+void PrinterQuery::ShowSystemDialogDone(PrintingContext::Result result) {
+  LOG(INFO) << "DGN - ShowSystemDialogDone " << result;
+
+  if (!callback_.is_null()) {
+    // This may cause reentrancy like to call StopWorker().
+    callback_.Run();
+    callback_.Reset();

[dgn, 2014/11/25 17:07:42]

callback reset here. I can't rely on something calling the same worker twice.
But I can't also (I didnt' find at least) use different workers, since the main
communication from PrintingController to chrome is through the printingcontext,
which is bound to a worker.

+  }
+}
+
+
 PrintJobWorker* PrinterQuery::DetachWorker(PrintJobWorkerOwner* new_owner) {
   DCHECK(callback_.is_null());
   DCHECK(worker_.get());
@@ -75,14 +95,15 @@ void PrinterQuery::GetSettings(
   StartWorker(callback);
 
   // Real work is done in PrintJobWorker::GetSettings().
-  is_print_dialog_box_shown_ = ask_user_for_settings == ASK_USER;
   worker_->PostTask(FROM_HERE,
                     base::Bind(&PrintJobWorker::GetSettings,
                                base::Unretained(worker_.get()),
-                               is_print_dialog_box_shown_,
+                               ask_user_for_settings,
                                expected_page_count,
                                has_selection,
                                margin_type));
+
+
 }
 
 void PrinterQuery::SetSettings(scoped_ptr<base::DictionaryValue> new_settings,