Make printing work better with OOPIF.

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 1485 matching lines @@
   UMA_HISTOGRAM_BOOLEAN("PrintPreview.InitiatedByScript",
                         frame->top() == frame);
 
   // Logging whether the top frame is remote is sufficient in this case. If
   // the top frame is local, the printing code will function correctly and
   // the frame itself will be printed, so the cases this histogram tracks is
   // where printing of a subframe will fail as of now.
   UMA_HISTOGRAM_BOOLEAN("PrintPreview.OutOfProcessSubframe",
                         frame->top()->isWebRemoteFrame());
 
-  for (auto& observer : observers_)
-    observer.PrintPage(frame, input_handler().handling_input_event());
+  RenderFrameImpl::FromWebFrame(frame)->ScriptedPrint(
+      input_handler().handling_input_event());
 }
 
 bool RenderViewImpl::enumerateChosenDirectory(
     const WebString& path,
     WebFileChooserCompletion* chooser_completion) {
   int id = enumeration_completion_id_++;
   enumeration_completions_[id] = chooser_completion;
   return Send(new ViewHostMsg_EnumerateDirectory(
       GetRoutingID(), id, blink::WebStringToFilePath(path)));
 }
@@ skipping 1274 matching lines @@
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(InputEventAckSource::MAIN_THREAD, input_event->type,
                         INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content