DialogSurfaceManager implementation.

content/browser/android/dialog_android_overlay.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_ANDROID_DIALOG_ANDROID_OVERLAY_H
+#define CONTENT_BROWSER_ANDROID_DIALOG_ANDROID_OVERLAY_H
+
+#include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
+#include "content/browser/android/content_view_core_impl.h"
+#include "content/browser/android/content_view_core_impl_observer.h"
+
+namespace content {
+
+// Native counterpart to DialogAndroidOverlay java class.  This is created by
+// the java class.  When the ContentViewCore for the provided (renderer, frame)
+// is attached to or detached from a WindowAndroid, we get the Android window
+// token and notify the java class.
+class DialogAndroidOverlay : public ContentViewCoreImplObserver {
+ public:
+  // Registers the JNI methods for ContentViewRender.
+  static bool RegisterDialogAndroidOverlay(JNIEnv* env);
+
+  // Construction, callable from a random thread.
+  DialogAndroidOverlay(const base::android::JavaParamRef<jobject>& receiver,
+                       int renderer_pid,
+                       int render_frame_id);
+
+  ~DialogAndroidOverlay() override;
+
+  // ContentViewCoreImplObserver
+  void OnContentViewCoreDestroyed() override;
+  void OnAttachedToWindow() override;
+  void OnDetachedFromWindow() override;
+
+ private:
+  // Finish init on the main thread.
+  void CompleteInitialization();
+
+  // Look up the ContentViewCore for |renderer_pid_| and |render_frame_id_|.
+  ContentViewCoreImpl* GetContentViewCore();
+
+ private:
+  // Java object that owns us.
+  base::android::ScopedJavaGlobalRef<jobject> receiver_;
+
+  int renderer_pid_;
+  int render_frame_id_;
+  ContentViewCoreImpl* cvc_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_DIALOG_ANDROID_OVERLAY_H