RenderWidget/RenderView: encapsulate ViewHostMsg_Show, etc, in a callback

content/renderer/render_widget_unittest.cc

 // 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.
 
 #include "content/renderer/render_widget.h"
 
 #include <tuple>
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 43 matching lines @@
  public:
   explicit InteractiveRenderWidget(CompositorDependencies* compositor_deps)
       : RenderWidget(++next_routing_id_,
                      compositor_deps,
                      blink::WebPopupTypeNone,
                      ScreenInfo(),
                      false,
                      false,
                      false),
         always_overscroll_(false) {
-    Init(MSG_ROUTING_NONE, mock_webwidget());
+    Init(RenderWidget::ShowCallback(), mock_webwidget());
   }
 
   void SetTouchRegion(const std::vector<gfx::Rect>& rects) {
     rects_ = rects;
   }
 
   void SendInputEvent(const blink::WebInputEvent& event) {
     OnHandleInputEvent(
         &event, ui::LatencyInfo(),
         ui::WebInputEventTraits::ShouldBlockEventStream(event)
@@ skipping 301 matching lines @@
 class PopupRenderWidget : public RenderWidget {
  public:
   explicit PopupRenderWidget(CompositorDependencies* compositor_deps)
       : RenderWidget(1,
                      compositor_deps,
                      blink::WebPopupTypePage,
                      ScreenInfo(),
                      false,
                      false,
                      false) {
-    Init(MSG_ROUTING_NONE, mock_webwidget());
+    Init(RenderWidget::ShowCallback(), mock_webwidget());
     did_show_ = true;
   }
 
   IPC::TestSink* sink() { return &sink_; }
 
   MockWebWidget* mock_webwidget() { return &mock_webwidget_; }
 
   void SetScreenMetricsEmulationParameters(
       bool,
       const blink::WebDeviceEmulationParams&) override {}
@@ skipping 101 matching lines @@
   blink::WebRect popup_emulated_rect(130, 170, 100, 400);
   widget()->setWindowRect(popup_emulated_rect);
 
   EXPECT_EQ(popup_emulated_rect.x, widget()->windowRect().x);
   EXPECT_EQ(popup_emulated_rect.y, widget()->windowRect().y);
   EXPECT_EQ(popup_emulated_rect.x, widget()->viewRect().x);
   EXPECT_EQ(popup_emulated_rect.y, widget()->viewRect().y);
 }
 
 }  // namespace content