Use pdf compositor service for printing when OOPIF is enabled

chrome/browser/printing/print_view_manager_base.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_
 #define CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/shared_memory.h"
+#include "base/memory/shared_memory_handle.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "components/prefs/pref_member.h"
 #include "components/printing/browser/print_manager.h"
+#include "components/printing/service/public/interfaces/pdf_compositor.mojom.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "mojo/public/cpp/system/platform_handle.h"
 #include "printing/features/features.h"
 #include "printing/printed_pages_source.h"
 
 struct PrintHostMsg_DidPrintPage_Params;
 
 namespace content {
 class RenderFrameHost;
 }
 
 namespace printing {
@@ skipping 50 matching lines @@
                const content::NotificationDetails& details) override;
 
   // content::WebContentsObserver implementation.
   void DidStartLoading() override;
 
   // Cancels the print job.
   void NavigationStopped() override;
 
   // IPC Message handlers.
   void OnDidGetPrintedPagesCount(int cookie, int number_pages) override;
-  void OnDidPrintPage(const PrintHostMsg_DidPrintPage_Params& params);
   void OnPrintingFailed(int cookie) override;
   void OnShowInvalidPrinterSettingsError();
+  void OnDidPrintPage(const PrintHostMsg_DidPrintPage_Params& params);
+
+  // Handle extra tasks once a page or doc is printed.
+  void UpdateForPrintedPage(const PrintHostMsg_DidPrintPage_Params& params,
+                            bool has_valid_page_data,
+                            std::unique_ptr<base::SharedMemory> shared_buf);
+
+  // IPC message handlers for service.
+  void OnComposePdfDone(const PrintHostMsg_DidPrintPage_Params& params,
+                        mojom::PdfCompositor::Status status,
+                        mojo::ScopedSharedBufferHandle handle);
 
   // Processes a NOTIFY_PRINT_JOB_EVENT notification.
   void OnNotifyPrintJobEvent(const JobEventDetails& event_details);
 
   // Requests the RenderView to render all the missing pages for the print job.
   // No-op if no print job is pending. Returns true if at least one page has
   // been requested to the renderer.
   bool RenderAllMissingPagesNow();
 
   // Quits the current message loop if these conditions hold true: a document is
@@ skipping 58 matching lines @@
 #if !defined(OS_MACOSX)
   // Set to true when OnDidPrintPage() should be expecting the first page.
   bool expecting_first_page_;
 #endif
 
   // Whether printing is enabled.
   BooleanPrefMember printing_enabled_;
 
   scoped_refptr<printing::PrintQueriesQueue> queue_;
 
+  base::WeakPtrFactory<PrintViewManagerBase> weak_ptr_factory_;

[Lei Zhang, 2017/09/09 00:44:59]

#include "base/memory/weak_ptr.h"

e.g. this only works because of this #include chains:
components/prefs/pref_member.h -> base/bind.h -> base/bind_internal.h ->
base/memory/weak_ptr.h

+
   DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBase);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASE_H_