Remove Sync GetPose VRService call, implement VRVSyncProvider

chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java
index 3bdbb7277dbfd37b107a0d578a55294a664af351..ff2445bfaf82ada39ee75d22b975a8ca2ffcf0d5 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java
@@ -6,13 +6,18 @@ package org.chromium.chrome.browser.vr_shell;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.content.Context;
 import android.graphics.Point;
 import android.os.StrictMode;
+import android.view.Choreographer;
+import android.view.Choreographer.FrameCallback;
+import android.view.Display;
 import android.view.MotionEvent;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 import android.view.View;
+import android.view.WindowManager;
 import android.widget.FrameLayout;
 
 import com.google.vr.ndk.base.AndroidCompat;
@@ -172,6 +177,17 @@ public class VrShellImpl extends GvrLayout implements VrShell, SurfaceHolder.Cal
 
         mOriginalWindowAndroid = mContentCVC.getWindowAndroid();
         mTab.updateWindowAndroid(mContentVrWindowAndroid);
+
+        Choreographer choreographer = Choreographer.getInstance();
+        choreographer.postFrameCallback(new FrameCallback() {
+            @Override
+            public void doFrame(long frameTimeNanos) {
+                Display display = ((WindowManager) mActivity.getSystemService(
+                        Context.WINDOW_SERVICE)).getDefaultDisplay();
+                nativeUpdateVSyncInterval(mNativeVrShell, frameTimeNanos,
+                        1.0d / display.getRefreshRate());
+            }
+        });
     }
 
     @CalledByNative
@@ -324,4 +340,6 @@ public class VrShellImpl extends GvrLayout implements VrShell, SurfaceHolder.Cal
             float dpr);
     private native void nativeUIBoundsChanged(long nativeVrShell, int width, int height, float dpr);
     private native void nativeSetWebVrMode(long nativeVrShell, boolean enabled);
+    private native void nativeUpdateVSyncInterval(long nativeVrShell, long timebaseNanos,
+            double intervalSeconds);
 }