Add `getName()` method

Summary: adds a `getName()` method to all `JavaScriptExecutor` classes that can be used by `ReactInstanceManager` to identify the bridge type when logging markers.

Reviewed By: fromcelticpark

Differential Revision: D7790531

fbshipit-source-id: efe485588738a38936accc4a7956840784b2dd08

ReactAndroid/src/main/java/com/facebook/react/bridge/JSCJavaScriptExecutor.java

@@ -20,5 +20,11 @@ import com.facebook.proguard.annotations.DoNotStrip;
     super(initHybrid(jscConfig));
   }
 
+  @Override
+  public String getName() {
+    return "JSCJavaScriptExecutor";
+  }
+
+
   private native static HybridData initHybrid(ReadableNativeMap jscConfig);
 }

ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptExecutor.java

@@ -26,4 +26,9 @@ public abstract class JavaScriptExecutor {
   public void close() {
     mHybridData.resetNative();
   }
+
+  /**
+   * Returns the name of the executor, identifying the underlying runtime.
+   */
+  abstract public String getName();
 }

ReactAndroid/src/main/java/com/facebook/react/bridge/ProxyJavaScriptExecutor.java

@@ -59,5 +59,10 @@ public class ProxyJavaScriptExecutor extends JavaScriptExecutor {
     }
   }
 
+  @Override
+  public String getName() {
+    return "ProxyJavaScriptExecutor";
+  }
+
   private native static HybridData initHybrid(JavaJSExecutor executor);
 }