Remove Sync GetPose VRService call, implement VRVSyncProvider

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

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/NonPresentingGvrContextImpl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/NonPresentingGvrContextImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/NonPresentingGvrContextImpl.java
index 4a47640d960588a966a3639a98b17dccff42edb8..c70bea449f7ab984e751378a42791be1b4309437 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/NonPresentingGvrContextImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/NonPresentingGvrContextImpl.java
@@ -24,19 +24,6 @@ public class NonPresentingGvrContextImpl implements NonPresentingGvrContext {
     }
 
     @Override
-    public void resume() {
-        mGvrLayout.getGvrApi().resumeTracking();
-    }
-
-    @Override
-    public void pause() {
-        // We can't pause/resume the GvrLayout, because doing so will force us to enter VR. However,
-        // we should be safe not pausing it as we never add it to the view hierarchy, or give it a
-        // presentation view, so there's nothing to pause but the tracking.
-        mGvrLayout.getGvrApi().pauseTracking();
-    }
-
-    @Override
     public void shutdown() {
         mGvrLayout.shutdown();
     }