Move ExternalVideoSurfaceHolder from WebContents UserData to BrowserMediaPlayerManager.

android_webview/native/external_video_surface_container_impl.cc

Index: android_webview/native/external_video_surface_container_impl.cc
diff --git a/android_webview/native/external_video_surface_container_impl.cc b/android_webview/native/external_video_surface_container_impl.cc
index 351b3cafbef601f4a4b94b524d59dd2bf94d054f..ca9ed3419b98d2a59fc824b9c4ea15f1141327fd 100644
--- a/android_webview/native/external_video_surface_container_impl.cc
+++ b/android_webview/native/external_video_surface_container_impl.cc
@@ -9,30 +9,9 @@
 #include "jni/ExternalVideoSurfaceContainer_jni.h"
 #include "ui/gfx/rect_f.h"
 
-using android_webview::ExternalVideoSurfaceContainerImpl;
 using base::android::AttachCurrentThread;
 using content::ContentViewCore;
 
-DEFINE_WEB_CONTENTS_USER_DATA_KEY(ExternalVideoSurfaceContainerImpl);
-
-namespace content {
-
-// static
-void ExternalVideoSurfaceContainer::CreateForWebContents(
-    WebContents* web_contents) {
-  WebContentsUserData<ExternalVideoSurfaceContainerImpl>::CreateForWebContents(
-      web_contents);
-}
-
-// static
-ExternalVideoSurfaceContainer* ExternalVideoSurfaceContainer::FromWebContents(
-    WebContents* web_contents) {
-  return WebContentsUserData<ExternalVideoSurfaceContainerImpl>::
-      FromWebContents(web_contents);
-}
-
-} // namespace content
-
 namespace android_webview {
 
 ExternalVideoSurfaceContainerImpl::ExternalVideoSurfaceContainerImpl(