Restart fullscreen video playback when switching back from background

android_webview/native/aw_contents.cc

Index: android_webview/native/aw_contents.cc
diff --git a/android_webview/native/aw_contents.cc b/android_webview/native/aw_contents.cc
index f949da08442c00b993d22b23376396b90c8c73fb..909a83a7fc6221c3a664916ec413840f6c913a51 100644
--- a/android_webview/native/aw_contents.cc
+++ b/android_webview/native/aw_contents.cc
@@ -733,12 +733,15 @@ void AwContents::SetWindowVisibility(JNIEnv* env, jobject obj, bool visible) {
 void AwContents::SetIsPaused(JNIEnv* env, jobject obj, bool paused) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   browser_view_renderer_->SetIsPaused(paused);
-  if (paused) {
-    ContentViewCore* cvc =
+  ContentViewCore* cvc =
         ContentViewCore::FromWebContents(web_contents_.get());
-    if (cvc)
-      cvc->PauseVideo();
-  }
+  if (!cvc)
+    return;
+
+  if (paused)
+    cvc->PauseVideo();
+  else
+    cvc->ResumeFullscreenVideo();
 }
 
 void AwContents::OnAttachedToWindow(JNIEnv* env, jobject obj, int w, int h) {