Remove video overlay support from WebView

android_webview/test/BUILD.gn

Index: android_webview/test/BUILD.gn
diff --git a/android_webview/test/BUILD.gn b/android_webview/test/BUILD.gn
index 50db9759648f87587925e0f7c3637a2034c239ec..1af668df424696f8edd06a37c8b8e738a7bd408a 100644
--- a/android_webview/test/BUILD.gn
+++ b/android_webview/test/BUILD.gn
@@ -75,7 +75,6 @@ android_assets("android_webview_apk_assets") {
     "shell/assets/full_screen_video_inside_div_test.html",
     "shell/assets/full_screen_video_test.html",
     "shell/assets/full_screen_video_test_not_preloaded.html",
-    "shell/assets/multiple_videos_test.html",
     "shell/assets/platform-media-codec-test.html",
     "shell/assets/video.3gp",
     "shell/assets/video.webm",
@@ -170,7 +169,6 @@ instrumentation_test_apk("android_webview_test_apk") {
     "../javatests/src/org/chromium/android_webview/test/CookieManagerStartupTest.java",
     "../javatests/src/org/chromium/android_webview/test/CookieManagerTest.java",
     "../javatests/src/org/chromium/android_webview/test/DisableHardwareAccelerationForTest.java",
-    "../javatests/src/org/chromium/android_webview/test/ExternalVideoSurfaceContainerTest.java",
     "../javatests/src/org/chromium/android_webview/test/FullScreenVideoTestAwContentsClient.java",
     "../javatests/src/org/chromium/android_webview/test/GeolocationTest.java",
     "../javatests/src/org/chromium/android_webview/test/GetTitleTest.java",
@@ -180,7 +178,6 @@ instrumentation_test_apk("android_webview_test_apk") {
     "../javatests/src/org/chromium/android_webview/test/LoadDataWithBaseUrlTest.java",
     "../javatests/src/org/chromium/android_webview/test/LoadUrlTest.java",
     "../javatests/src/org/chromium/android_webview/test/MediaAccessPermissionRequestTest.java",
-    "../javatests/src/org/chromium/android_webview/test/MultipleVideosTest.java",
     "../javatests/src/org/chromium/android_webview/test/NavigationHistoryTest.java",
     "../javatests/src/org/chromium/android_webview/test/PlatformMediaCodecTest.java",
     "../javatests/src/org/chromium/android_webview/test/PolicyUrlFilteringTest.java",