[Base] Android JNIEnv attachment and LaunchWebBrowser

src/xenia/base/main_android.h

@@ -2,7 +2,7 @@
  ******************************************************************************
  * Xenia : Xbox 360 Emulator Research Project                                 *
  ******************************************************************************
- * Copyright 2021 Ben Vanik. All rights reserved.                             *
+ * Copyright 2022 Ben Vanik. All rights reserved.                             *
  * Released under the BSD license - see LICENSE in the root for more details. *
  ******************************************************************************
  */
@@ -10,6 +10,7 @@
 #ifndef XENIA_BASE_MAIN_ANDROID_H_
 #define XENIA_BASE_MAIN_ANDROID_H_
 
+#include <jni.h>
 #include <cstdint>
 
 #include "xenia/base/platform.h"
@@ -27,14 +28,22 @@ namespace xe {
 // counting internally.
 //
 // In standalone console apps built with $(BUILD_EXECUTABLE), these functions
-// must be called in `main`.
-void InitializeAndroidAppFromMainThread(int32_t api_level);
+// must be called in `main`, with a null main thread JNI environment.
+void InitializeAndroidAppFromMainThread(int32_t api_level,
+                                        JNIEnv* main_thread_jni_env,
+                                        jobject application_context);
 void ShutdownAndroidAppFromMainThread();
 
 // May be the minimum supported level if the initialization was done without a
 // configuration.
 int32_t GetAndroidApiLevel();
 
+// May return null if not in a Java VM process, or in case of a failure to
+// attach on a non-main thread.
+JNIEnv* GetAndroidThreadJNIEnv();
+// Returns the global reference if in an application context, or null otherwise.
+jobject GetAndroidApplicationContext();
+
 }  // namespace xe
 
 #endif  // XENIA_BASE_MAIN_ANDROID_H_