Fixes WebVR presentation from within VRShell.

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
index d993924d34d82be02d353a5ae7a522bf515d65d5..94518e917008cab167176e52160617deced9fb8d 100644
--- a/chrome/browser/android/vr_shell/vr_shell_delegate.h
+++ b/chrome/browser/android/vr_shell/vr_shell_delegate.h
@@ -38,7 +38,7 @@ class VrShellDelegate : public device::GvrDelegateProvider {
 
   void SetPresentResult(JNIEnv* env,
                         const base::android::JavaParamRef<jobject>& obj,
-                        jboolean result);
+                        jboolean success);
   void DisplayActivate(JNIEnv* env,
                        const base::android::JavaParamRef<jobject>& obj);
   void UpdateVSyncInterval(JNIEnv* env,
@@ -48,7 +48,6 @@ class VrShellDelegate : public device::GvrDelegateProvider {
   void OnPause(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnResume(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
-  device::mojom::VRSubmitFrameClientPtr TakeSubmitFrameClient();
 
   device::GvrDeviceProvider* device_provider() { return device_provider_; }
 
@@ -72,6 +71,7 @@ class VrShellDelegate : public device::GvrDelegateProvider {
   int64_t timebase_nanos_ = 0;
   double interval_seconds_ = 0;
   device::mojom::VRSubmitFrameClientPtr submit_client_;
+  bool pending_successful_present_request_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(VrShellDelegate);
 };