Decouple scheduling animation of webview plugins from layout.

third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp b/third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp
index 6c4b14d28b26638299534429a8c2b5754c0e609c..e96868f362c65cc290ab212bb79b0316e2c2c4e9 100644
--- a/third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp
@@ -134,8 +134,9 @@ void LayoutEmbeddedObject::layout()
 
     Widget* widget = this->widget();
     if (widget) {
+        // TODO(chrishtr): remove this code. It's now called in FrameView::updateStyleAndLayoutIfNeededRecursive.

[wkorman, 2016/03/08 01:38:50]

What blocks removing this?

[chrishtr, 2016/03/10 19:06:14]

I mentioned it in the first patchset, but I left this in out of
conservatism for M49 and M50. Going to send a patch to remove it now.

         if (widget->isPluginView())
-            toPluginView(widget)->layoutIfNeeded();
+            toPluginView(widget)->updateAllLifecyclePhases();
     } else if (frameView()) {
         frameView()->addPartToUpdate(*this);
     }