Add RCTPerformanceLogger data to PerfMonitor

Summary: public

Add information the times recorded by RCTPerformanceLogger to RCTPerfMonitor,
tap the monitor to show a table view with the data.

Reviewed By: jspahrsummers

Differential Revision: D2595372

fb-gh-sync-id: dc3b73af71b6d7f258e4e5991116bbc6cedc21fb

React/Base/RCTPerformanceLogger.h

@@ -26,3 +26,4 @@ void RCTPerformanceLoggerStart(RCTPLTag tag);
 void RCTPerformanceLoggerEnd(RCTPLTag tag);
 void RCTPerformanceLoggerSet(RCTPLTag tag, int64_t value);
 NSArray *RCTPerformanceLoggerOutput(void);
+NSArray *RCTPerformanceLoggerLabels(void);

React/Base/RCTPerformanceLogger.m

@@ -56,6 +56,19 @@ NSArray *RCTPerformanceLoggerOutput(void)
   ];
 }
 
+NSArray *RCTPerformanceLoggerLabels(void)
+{
+  return @[
+    @"ScriptDownload",
+    @"ScriptExecution",
+    @"NativeModuleInit",
+    @"NativeModulePrepareConfig",
+    @"NativeModuleInjectConfig",
+    @"TTI",
+    @"BundleSize",
+  ];
+}
+
 @interface RCTPerformanceLogger : NSObject <RCTBridgeModule>
 
 @end
@@ -88,15 +101,7 @@ RCT_EXPORT_MODULE()
 
   [_bridge enqueueJSCall:@"PerformanceLogger.addTimespans" args:@[
     RCTPerformanceLoggerOutput(),
-    @[
-      @"ScriptDownload",
-      @"ScriptExecution",
-      @"NativeModuleInit",
-      @"NativeModulePrepareConfig",
-      @"NativeModuleInjectConfig",
-      @"TTI",
-      @"BundleSize",
-    ],
+    RCTPerformanceLoggerLabels(),
   ]];
 }