Move didMeaningfulLayout calls from WebViewClient to WebWidgetClient.

third_party/WebKit/Source/web/tests/FrameTestHelpers.h

Index: third_party/WebKit/Source/web/tests/FrameTestHelpers.h
diff --git a/third_party/WebKit/Source/web/tests/FrameTestHelpers.h b/third_party/WebKit/Source/web/tests/FrameTestHelpers.h
index 8a435f325e9fc5ae8c5283d25e241b08cfdc07bb..2b71300e146293a0877c6b46d33f54dcf8d9710c 100644
--- a/third_party/WebKit/Source/web/tests/FrameTestHelpers.h
+++ b/third_party/WebKit/Source/web/tests/FrameTestHelpers.h
@@ -135,6 +135,7 @@ public:
     void initializeLayerTreeView() override;
     WebLayerTreeView* layerTreeView() override;
     void scheduleAnimation() override;
+    void didMeaningfulLayout(WebMeaningfulLayout) override;
 
 private:
     TestWebViewClient* m_testWebViewClient;
@@ -161,6 +162,8 @@ public:
     TestWebWidgetClient* widgetClient() { return &m_testWebWidgetClient; }
 
 private:
+    friend class TestWebViewWidgetClient;
+
     TestWebViewWidgetClient m_testWebWidgetClient;
     std::unique_ptr<WebLayerTreeView> m_layerTreeView;
     bool m_animationScheduled;