Print support for Windows Metro...

chrome/browser/printing/print_job_worker.cc

Index: chrome/browser/printing/print_job_worker.cc
diff --git a/chrome/browser/printing/print_job_worker.cc b/chrome/browser/printing/print_job_worker.cc
index 1162cc5426117ccb9b3289386f035350812fb777..a0f6fcdb770ce5558b81ebc290ad4c984872dd2d 100644
--- a/chrome/browser/printing/print_job_worker.cc
+++ b/chrome/browser/printing/print_job_worker.cc
@@ -69,6 +69,12 @@ void PrintJobWorker::SetNewOwner(PrintJobWorkerOwner* new_owner) {
   owner_ = new_owner;
 }
 
+void PrintJobWorker::SetPrintDestination(
+    PrintDestinationInterface* destination) {
+  DCHECK(destination_.get() == NULL);

[robertshield, 2012/06/28 17:48:54]

Why is this DCHECK present? 

If it needs to be here, please document in the header that this method must only
be called once.

[MAD, 2012/06/28 19:05:51]

It was just for debugging, forgot to remove... Thanks!
Done.

+  destination_ = destination;
+}
+
 void PrintJobWorker::GetSettings(bool ask_user_for_settings,
                                  gfx::NativeView parent_view,
                                  int document_page_count,
@@ -85,7 +91,9 @@ void PrintJobWorker::GetSettings(bool ask_user_for_settings,
   // MessageLoop::current()->SetNestableTasksAllowed(true);
   printing_context_->set_margin_type(margin_type);
 
-  if (ask_user_for_settings) {
+  // When we delegate to a destination, we don't ask the user for settings.
+  // TODO(mad): Ask the destination for settings.
+  if (ask_user_for_settings && destination_.get() == NULL) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(&HoldRefCallback, make_scoped_refptr(owner_),
@@ -241,6 +249,8 @@ void PrintJobWorker::OnNewPage() {
     }
     // We have enough information to initialize page_number_.
     page_number_.Init(document_->settings(), page_count);
+    if (destination_.get() != NULL)
+      destination_->SetPageCount(page_count);
   }
   DCHECK_NE(page_number_, PageNumber::npos());
 
@@ -308,6 +318,17 @@ void PrintJobWorker::SpoolPage(PrintedPage* page) {
     return;
   }
 
+  if (destination_.get() != NULL) {
+    std::vector<uint8> metabytes(page->metafile()->GetDataSize());
+    bool success = page->metafile()->GetData(
+        reinterpret_cast<void*>(&metabytes[0]), metabytes.size());
+    destination_->SetPageContent(
+        page->page_number(),
+        reinterpret_cast<void*>(&metabytes[0]),
+        metabytes.size());
+    return;
+  }
+
   // Actual printing.
 #if defined(OS_WIN) || defined(OS_MACOSX)
   document_->RenderPrintedPage(*page, printing_context_->context());