Add flag for enabling/disabling video fullscreen detection

chrome/browser/android/app_hooks.cc

Index: chrome/browser/android/app_hooks.cc
diff --git a/chrome/browser/android/app_hooks.cc b/chrome/browser/android/app_hooks.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e11f428acd543f9314ce0e657a028358c971ea11
--- /dev/null
+++ b/chrome/browser/android/app_hooks.cc
@@ -0,0 +1,27 @@
+// 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.
+
+#include "chrome/browser/android/app_hooks.h"
+
+#include "base/android/jni_android.h"
+#include "jni/AppHooks_jni.h"
+
+using base::android::ScopedJavaLocalRef;
+
+namespace chrome {
+namespace android {
+
+AppHooks::AppHooks() = default;
+
+AppHooks::~AppHooks() = default;
+
+bool AppHooks::ShouldDetectVideoFullscreen() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> app_hooks_obj = Java_AppHooks_get(env);
+
+  return Java_AppHooks_shouldDetectVideoFullscreen(env, app_hooks_obj);
+}
+
+}  // namespace android
+}  // namespace chrome