Remove unfailable null checks in MediaControls

Source/core/html/shadow/MediaControlsAndroid.cpp

Index: Source/core/html/shadow/MediaControlsAndroid.cpp
diff --git a/Source/core/html/shadow/MediaControlsAndroid.cpp b/Source/core/html/shadow/MediaControlsAndroid.cpp
index 6943ae5f847da28221246aa63c2cba8c0265d5c2..50043676abf32dea9d729fd6d121b63b868f66ef 100644
--- a/Source/core/html/shadow/MediaControlsAndroid.cpp
+++ b/Source/core/html/shadow/MediaControlsAndroid.cpp
@@ -59,10 +59,8 @@ bool MediaControlsAndroid::initializeControls(Document& document)
 
 void MediaControlsAndroid::setMediaController(MediaControllerInterface* controller)
 {
-    if (m_overlayPlayButton)
-        m_overlayPlayButton->setMediaController(controller);
-    if (m_overlayEnclosure)
-        m_overlayEnclosure->setMediaController(controller);
+    m_overlayPlayButton->setMediaController(controller);
+    m_overlayEnclosure->setMediaController(controller);
     MediaControls::setMediaController(controller);
 }