Make printing work better with OOPIF. (try 2)

android_webview/browser/aw_print_manager.h

 // Copyright 2015 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 ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_
 
 #include "base/macros.h"
 #include "components/printing/browser/print_manager.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 17 matching lines @@
   bool PrintNow();
 
  private:
   friend class content::WebContentsUserData<AwPrintManager>;
 
   AwPrintManager(content::WebContents* contents,
                  const printing::PrintSettings& settings,
                  const base::FileDescriptor& file_descriptor,
                  const PdfWritingDoneCallback& callback);
 
-  bool OnMessageReceived(const IPC::Message& message) override;
-  void OnGetDefaultPrintSettings(IPC::Message* reply_msg);
+  // printing::PrintManager:
+  bool OnMessageReceived(const IPC::Message& message,
+                         content::RenderFrameHost* render_frame_host) override;
+
+  // IPC Handlers
+  void OnGetDefaultPrintSettings(content::RenderFrameHost* render_frame_host,
+                                 IPC::Message* reply_msg);
 
   printing::PrintSettings settings_;
 
   DISALLOW_COPY_AND_ASSIGN(AwPrintManager);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_