Switch WebVR to handle GvrApi management through VrShellDelegate

chrome/browser/android/vr_shell/vr_shell_delegate.h

Index: chrome/browser/android/vr_shell/vr_shell_delegate.h
diff --git a/chrome/browser/android/vr_shell/vr_shell_delegate.h b/chrome/browser/android/vr_shell/vr_shell_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..2c09b382bee433b5b7eaa45bd6d71bab69084b30
--- /dev/null
+++ b/chrome/browser/android/vr_shell/vr_shell_delegate.h
@@ -0,0 +1,44 @@
+// Copyright 2016 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 CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_DELEGATE_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_DELEGATE_H_
+
+#include <jni.h>
+
+#include "base/android/jni_weak_ref.h"
+#include "device/vr/android/gvr/gvr_delegate.h"
+
+namespace vr_shell {
+
+class VrShell;
+
+class VrShellDelegate : public device::GvrDelegateProvider {
+ public:
+  VrShellDelegate(JNIEnv* env, jobject obj);
+  virtual ~VrShellDelegate();
+
+  static VrShellDelegate* getNativeDelegate(JNIEnv* env, jobject jdelegate);
+
+  // Called by the Java VrShellDelegate. Returns true if the GvrDeviceProvider
+  // needs to handle shutdown first.
+  bool ExitWebVRIfNecessary(JNIEnv* env, jobject obj);
+
+  // device::vrDelegateProvider implementation
+  bool RequestWebVRPresent(device::GvrDeviceProvider* device_provider) override;
+  void ExitWebVRPresent() override;
+
+  // Called from VRShell
+  void OnVrShellReady(VrShell* vr_shell);
+
+ private:
+  base::android::ScopedJavaGlobalRef<jobject> j_vr_shell_delegate_;
+  device::GvrDeviceProvider* device_provider_;
+};
+
+bool RegisterVrShellDelegate(JNIEnv* env);
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_DELEGATE_H_