Do not resume compositor when WebVR is exited after suspending the app (#3048)

Author: MortimerGoro

app/src/common/shared/org/mozilla/vrbrowser/VRBrowserActivity.java

@@ -973,8 +973,11 @@ void resumeGeckoViewCompositor() {
         GleanMetricsService.stopImmersive();
         Handler handler = new Handler(Looper.getMainLooper());
         handler.postDelayed(() -> {
-            mWindows.resumeCompositor();
-            Log.d(LOGTAG, "Compositor Resumed");
+            if (!mWindows.isPaused()) {
+                Log.d(LOGTAG, "Compositor resume begin");
+                mWindows.resumeCompositor();
+                Log.d(LOGTAG, "Compositor resume end");
+            }
         }, 20);
     }
 

app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/Windows.java

@@ -458,6 +458,10 @@ public void onResume() {
         TelemetryWrapper.resetOpenedWindowsCount(mPrivateWindows.size(), true);
     }
 
+    public boolean isPaused() {
+        return mIsPaused;
+    }
+
     public void onDestroy() {
         if (mTabsWidget != null && !mTabsWidget.isReleased()) {
             mTabsWidget.releaseWidget();