Hide overlay play button if it can't be shown without clipping

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

Index: third_party/WebKit/Source/core/layout/LayoutMedia.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutMedia.cpp b/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
index ae50013ff9ecb3b817429f21eccb38bf6018c019..c5cfabd5438825095e56c340f62c4091a9059c36 100644
--- a/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
@@ -54,7 +54,9 @@ void LayoutMedia::layout() {
 
   LayoutState state(*this);
 
-  Optional<LayoutUnit> newPanelWidth;
+  // Used to notify MediaControls of initial size.
+  Optional<LayoutUnit> newWidth;
+  Optional<LayoutUnit> newHeight;
 
 // Iterate the children in reverse order so that the media controls are laid
 // out before the text track container. This is to ensure that the text
@@ -83,7 +85,8 @@ void LayoutMedia::layout() {
     LayoutUnit width = newRect.width();
     if (child->node()->isMediaControls()) {
       width = computePanelWidth(newRect);
-      newPanelWidth = width;
+      newWidth = width;
+      newHeight = newRect.height();
     }
 
     LayoutBox* layoutBox = toLayoutBox(child);
@@ -100,14 +103,9 @@ void LayoutMedia::layout() {
 
   // Notify our MediaControls that a layout has happened.
   if (mediaElement() && mediaElement()->mediaControls() &&
-      newPanelWidth.has_value()) {
-    if (!m_lastReportedPanelWidth.has_value() ||
-        m_lastReportedPanelWidth.value() != newPanelWidth.value()) {
-      mediaElement()->mediaControls()->notifyPanelWidthChanged(
-          newPanelWidth.value());
-      // Store the last value we reported, so we know if it has changed.
-      m_lastReportedPanelWidth = newPanelWidth.value();
-    }
+      newWidth.has_value() && newHeight.has_value()) {
+    mediaElement()->mediaControls()->onLayout(newWidth->toInt(),
+                                              newHeight->toInt());
   }
 }