components: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

components/printing/renderer/print_web_view_helper.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 "components/printing/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "base/auto_reset.h"
 #include "base/json/json_writer.h"
+#include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/process/process_handle.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/thread_task_runner_handle.h"
 #include "components/printing/common/print_messages.h"
 #include "content/public/common/web_preferences.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "grit/components_resources.h"
 #include "net/base/escape.h"
 #include "printing/pdf_metafile_skia.h"
 #include "printing/units.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
@@ skipping 692 matching lines @@
 }
 
 bool PrepareFrameAndViewForPrint::allowsBrokenNullLayerTreeView() const {
   return true;
 }
 
 void PrepareFrameAndViewForPrint::didStopLoading() {
   DCHECK(!on_ready_.is_null());
   // Don't call callback here, because it can delete |this| and WebView that is
   // called didStopLoading.
-  base::MessageLoop::current()->PostTask(
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&PrepareFrameAndViewForPrint::CallOnReady,
                             weak_ptr_factory_.GetWeakPtr()));
 }
 
 blink::WebFrame* PrepareFrameAndViewForPrint::createChildFrame(
     blink::WebLocalFrame* parent,
     blink::WebTreeScopeType scope,
     const blink::WebString& name,
     blink::WebSandboxFlags sandboxFlags) {
   blink::WebFrame* frame = blink::WebLocalFrame::create(scope, this);
@@ skipping 937 matching lines @@
       //    document has been loaded.
       is_scripted_preview_delayed_ = true;
       if (is_loading_ && GetPlugin(print_preview_context_.source_frame())) {
         // Wait for DidStopLoading. Plugins may not know the correct
         // |is_modifiable| value until they are fully loaded, which occurs when
         // DidStopLoading() is called. Defer showing the preview until then.
         on_stop_loading_closure_ =
             base::Bind(&PrintWebViewHelper::ShowScriptedPrintPreview,
                        base::Unretained(this));
       } else {
-        base::MessageLoop::current()->PostTask(
+        base::ThreadTaskRunnerHandle::Get()->PostTask(
             FROM_HERE, base::Bind(&PrintWebViewHelper::ShowScriptedPrintPreview,
                                   weak_ptr_factory_.GetWeakPtr()));
       }
       IPC::SyncMessage* msg =
           new PrintHostMsg_SetupScriptedPrintPreview(routing_id());
       msg->EnableMessagePumping();
       Send(msg);
       is_scripted_preview_delayed_ = false;
       return;
     }
@@ skipping 369 matching lines @@
       blink::WebConsoleMessage::LevelWarning, message));
   return false;
 }
 
 void PrintWebViewHelper::ScriptingThrottler::Reset() {
   // Reset counter on successful print.
   count_ = 0;
 }
 
 }  // namespace printing