Enable page selection for WebView printing

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 "components/printing/common/print_messages.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "printing/print_settings.h"
 
 namespace android_webview {
 
 class AwPrintManager : public printing::PrintManager,
     public content::WebContentsUserData<AwPrintManager> {
  public:
   // Creates an AwPrintManager for the provided WebContents. If the
   // AwPrintManager already exists, it is destroyed and a new one is created.
@@ skipping 16 matching lines @@
                  const PdfWritingDoneCallback& callback);
 
   // 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);
 
+  void OnScriptedPrint(content::RenderFrameHost* render_frame_host,
+                       const PrintHostMsg_ScriptedPrint_Params& params,
+                       IPC::Message* reply_msg);
+
   printing::PrintSettings settings_;
 
   DISALLOW_COPY_AND_ASSIGN(AwPrintManager);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_PRINT_MANAGER_H_