Implement window.print() on Android

chrome/browser/printing/printing_message_filter.cc

Index: chrome/browser/printing/printing_message_filter.cc
diff --git a/chrome/browser/printing/printing_message_filter.cc b/chrome/browser/printing/printing_message_filter.cc
index 6af14f7f13139f166d1dea644f004294a9b5dcdd..d6f555824510363caf1b2cc6cf90727f2bf6eb3b 100644
--- a/chrome/browser/printing/printing_message_filter.cc
+++ b/chrome/browser/printing/printing_message_filter.cc
@@ -34,6 +34,7 @@
 
 #if defined(OS_ANDROID)
 #include "base/strings/string_number_conversions.h"
+#include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/printing/print_view_manager_basic.h"
 #include "printing/printing_context_android.h"
 #endif
@@ -280,7 +281,7 @@ void PrintingMessageFilter::OnGetDefaultPrintSettings(IPC::Message* reply_msg) {
   // Loads default settings. This is asynchronous, only the IPC message sender
   // will hang until the settings are retrieved.
   printer_query->GetSettings(
-      PrinterQuery::DEFAULTS,
+      GetSettingsAskParam::DEFAULTS,
       0,
       false,
       DEFAULT_MARGINS,
@@ -323,8 +324,22 @@ void PrintingMessageFilter::OnScriptedPrint(
     printer_query =
         queue_->CreatePrinterQuery(render_process_id_, reply_msg->routing_id());
   }
-  printer_query->GetSettings(
-      PrinterQuery::ASK_USER,
+
+  DLOG(INFO) << "DGN OnScriptedPrint - cookie: " << params.cookie;
+
+  if (params.use_system_specific_flow) {
+    printer_query->GetSettings(
+      GetSettingsAskParam::SYSTEM_SPECIFIC,
+      params.expected_pages_count,
+      params.has_selection,
+      params.margin_type,
+      base::Bind(&PrintingMessageFilter::OnSystemSpecificReply,
+                 this,
+                 printer_query,
+                 reply_msg));
+  } else {
+    printer_query->GetSettings(
+      GetSettingsAskParam::ASK_USER,
       params.expected_pages_count,
       params.has_selection,
       params.margin_type,
@@ -332,12 +347,16 @@ void PrintingMessageFilter::OnScriptedPrint(
                  this,
                  printer_query,
                  reply_msg));
+  }
 }
 
 void PrintingMessageFilter::OnScriptedPrintReply(
     scoped_refptr<PrinterQuery> printer_query,
     IPC::Message* reply_msg) {
   PrintMsg_PrintPages_Params params;
+
+DLOG(INFO) << "DGN OnScriptedPrintReply";
+
 #if defined(OS_ANDROID)
   // We need to save the routing ID here because Send method below deletes the
   // |reply_msg| before we can get the routing ID for the Android code.
@@ -370,9 +389,21 @@ void PrintingMessageFilter::OnScriptedPrintReply(
   }
 }
 
+void PrintingMessageFilter::OnSystemSpecificReply(
+    scoped_refptr<PrinterQuery> printer_query,
+    IPC::Message* reply_msg) {
+
+  DLOG(INFO) << "DGN OnSystemSpecificReply";
+  Send(reply_msg);
+  printer_query->StopWorker();
+}
+
 #if defined(OS_ANDROID)
 void PrintingMessageFilter::UpdateFileDescriptor(int render_view_id, int fd) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  DLOG(INFO) << "DGN UpdateFileDescriptor";
+
   content::WebContents* wc = GetWebContentsForRenderView(render_view_id);
   if (!wc)
     return;