Add more systrace sections to FabricJSIModuleProvider

Summary:
Adding more Systrace sections to get perf information during critical paths.

Changelog: [Internal]

Reviewed By: ejanzer

Differential Revision: D24960195

fbshipit-source-id: 099e9cfac8ac87287e48e9915e6b28fe7a448783

Author: JoshuaGross

ReactAndroid/src/main/java/com/facebook/react/fabric/FabricJSIModuleProvider.java

@@ -56,6 +56,7 @@ public FabricJSIModuleProvider(
 
   @Override
   public UIManager get() {
+    Systrace.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "FabricJSIModuleProvider.get");
     final EventBeatManager eventBeatManager = new EventBeatManager(mReactApplicationContext);
     final FabricUIManager uiManager = createUIManager(eventBeatManager);
     Systrace.beginSection(
@@ -76,7 +77,10 @@ public UIManager get() {
         jsMessageQueueThread,
         mComponentFactory,
         mConfig);
+
+    Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
     Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
+
     return uiManager;
   }