Use timestamps from QPL by default

Differential Revision: D8207166

fbshipit-source-id: 1e43d6874ee400cb2e26a11cbcfb12ee32d28d3c

Author: alexeylang

Libraries/Utilities/PerformanceLogger.js

@@ -16,7 +16,9 @@ const performanceNow =
   /* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an
    * error found when Flow v0.54 was deployed. To see the error delete this
    * comment and run Flow. */
-  global.nativePerformanceNow || require('fbjs/lib/performanceNow');
+  global.nativeQPLTimestamp ||
+  global.nativePerformanceNow ||
+  require('fbjs/lib/performanceNow');
 
 type Timespan = {
   description?: string,