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

third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp

Index: third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp b/third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp
index 4382731a04b497a200cbc9f1f4505674a7107c99..27b337b2704cbac7f544427a08d94c83c5a03554 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlsTest.cpp
@@ -163,10 +163,11 @@ class MediaControlsTest : public ::testing::Test {
         WebRemotePlaybackAvailability::DeviceAvailable);
   }
 
-  void ensureLayout() {
-    // Force a relayout, so that the controls know the width.  Otherwise,
-    // they don't know if, for example, the cast button will fit.
-    m_mediaControls->mediaElement().clientWidth();
+  void ensureSizing() {
+    // Fire the size-change callback to ensure that the controls have
+    // been properly notified of the video size.
+    m_mediaControls->notifyElementSizeChanged(
+        m_mediaControls->mediaElement().getBoundingClientRect());
   }
 
   void simulateHideMediaControlsTimerFired() {
@@ -241,7 +242,7 @@ TEST_F(MediaControlsTest, ResetDoesNotTriggerInitialLayout) {
 }
 
 TEST_F(MediaControlsTest, CastButtonRequiresRoute) {
-  ensureLayout();
+  ensureSizing();
   mediaControls().mediaElement().setBooleanAttribute(HTMLNames::controlsAttr,
                                                      true);
 
@@ -256,7 +257,7 @@ TEST_F(MediaControlsTest, CastButtonRequiresRoute) {
 }
 
 TEST_F(MediaControlsTest, CastButtonDisableRemotePlaybackAttr) {
-  ensureLayout();
+  ensureSizing();
   mediaControls().mediaElement().setBooleanAttribute(HTMLNames::controlsAttr,
                                                      true);
 
@@ -343,7 +344,7 @@ TEST_F(MediaControlsTest, KeepControlsVisibleIfOverflowListVisible) {
 }
 
 TEST_F(MediaControlsTest, DownloadButtonDisplayed) {
-  ensureLayout();
+  ensureSizing();
 
   Element* downloadButton = getElementByShadowPseudoId(
       mediaControls(), "-internal-media-controls-download-button");
@@ -358,7 +359,7 @@ TEST_F(MediaControlsTest, DownloadButtonDisplayed) {
 }
 
 TEST_F(MediaControlsTest, DownloadButtonNotDisplayedEmptyUrl) {
-  ensureLayout();
+  ensureSizing();
 
   Element* downloadButton = getElementByShadowPseudoId(
       mediaControls(), "-internal-media-controls-download-button");
@@ -372,7 +373,7 @@ TEST_F(MediaControlsTest, DownloadButtonNotDisplayedEmptyUrl) {
 }
 
 TEST_F(MediaControlsTest, DownloadButtonNotDisplayedInfiniteDuration) {
-  ensureLayout();
+  ensureSizing();
 
   Element* downloadButton = getElementByShadowPseudoId(
       mediaControls(), "-internal-media-controls-download-button");
@@ -389,7 +390,7 @@ TEST_F(MediaControlsTest, DownloadButtonNotDisplayedInfiniteDuration) {
 }
 
 TEST_F(MediaControlsTest, DownloadButtonNotDisplayedHLS) {
-  ensureLayout();
+  ensureSizing();
 
   Element* downloadButton = getElementByShadowPseudoId(
       mediaControls(), "-internal-media-controls-download-button");
@@ -403,7 +404,7 @@ TEST_F(MediaControlsTest, DownloadButtonNotDisplayedHLS) {
 }
 
 TEST_F(MediaControlsTest, TimelineSeekToRoundedEnd) {
-  ensureLayout();
+  ensureSizing();
 
   MediaControlTimelineElement* timeline =
       static_cast<MediaControlTimelineElement*>(getElementByShadowPseudoId(