Remove the legacy fullscreen video path in Android.

content/shell/android/java/src/org/chromium/content_shell/ShellManager.java

Index: content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
diff --git a/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java b/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
index aab6caa67fffbd35d92fe2bbbc134017acd6c37f..2ebbcb3842a0225ed8eb90da8a725839f2c17581 100644
--- a/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
+++ b/content/shell/android/java/src/org/chromium/content_shell/ShellManager.java
@@ -12,7 +12,6 @@ import android.view.View;
 import android.widget.FrameLayout;
 
 import org.chromium.base.CalledByNative;
-import org.chromium.base.CommandLine;
 import org.chromium.base.JNINamespace;
 import org.chromium.base.ThreadUtils;
 import org.chromium.content.browser.ActivityContentVideoViewClient;
@@ -20,7 +19,6 @@ import org.chromium.content.browser.ContentVideoViewClient;
 import org.chromium.content.browser.ContentViewClient;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content.browser.ContentViewRenderView;
-import org.chromium.content.common.ContentSwitches;
 import org.chromium.ui.base.WindowAndroid;
 
 /**
@@ -53,20 +51,14 @@ public class ShellManager extends FrameLayout {
                     @Override
                     public boolean onShowCustomView(View view) {
                         boolean success = super.onShowCustomView(view);
-                        if (!CommandLine.getInstance().hasSwitch(
-                                ContentSwitches.DISABLE_OVERLAY_FULLSCREEN_VIDEO_SUBTITLE)) {
-                            setOverlayVideoMode(true);
-                        }
+                        setOverlayVideoMode(true);
                         return success;
                     }
 
                     @Override
                     public void onDestroyContentVideoView() {
                         super.onDestroyContentVideoView();
-                        if (!CommandLine.getInstance().hasSwitch(
-                                ContentSwitches.DISABLE_OVERLAY_FULLSCREEN_VIDEO_SUBTITLE)) {
-                            setOverlayVideoMode(false);
-                        }
+                        setOverlayVideoMode(false);
                     }
                 };
             }