Update loading banner text and colors

Summary: This diff updates the loading banner text and color on Android to match its style on iOS.

Differential Revision: D22066823

fbshipit-source-id: 7f8d6cf1a6c4c48babe919995044978d7a81c674

ReactAndroid/src/main/java/com/facebook/react/devsupport/BundleDownloader.java

@@ -200,10 +200,8 @@ public class BundleDownloader {
 
                   try {
                     JSONObject progress = new JSONObject(body.readUtf8());
-                    String status = null;
-                    if (progress.has("status")) {
-                      status = progress.getString("status");
-                    }
+                    String status =
+                        progress.has("status") ? progress.getString("status") : "Bundling";
                     Integer done = null;
                     if (progress.has("done")) {
                       done = progress.getInt("done");
@@ -220,11 +218,9 @@ public class BundleDownloader {
               }
 
               @Override
-              public void onChunkProgress(Map<String, String> headers, long loaded, long total)
-                  throws IOException {
+              public void onChunkProgress(Map<String, String> headers, long loaded, long total) {
                 if ("application/javascript".equals(headers.get("Content-Type"))) {
-                  callback.onProgress(
-                      "Downloading JavaScript bundle", (int) (loaded / 1024), (int) (total / 1024));
+                  callback.onProgress("Downloading", (int) (loaded / 1024), (int) (total / 1024));
                 }
               }
             });

ReactAndroid/src/main/java/com/facebook/react/devsupport/DevLoadingViewController.java

@@ -37,8 +37,7 @@ public class DevLoadingViewController {
     sEnabled = enabled;
   }
 
-  public DevLoadingViewController(
-      Context context, ReactInstanceManagerDevHelper reactInstanceManagerHelper) {
+  public DevLoadingViewController(ReactInstanceManagerDevHelper reactInstanceManagerHelper) {
     mReactInstanceManagerHelper = reactInstanceManagerHelper;
   }
 
@@ -98,12 +97,7 @@ public class DevLoadingViewController {
             message.append(status != null ? status : "Loading");
             if (done != null && total != null && total > 0) {
               message.append(
-                  String.format(
-                      Locale.getDefault(),
-                      " %.1f%% (%d/%d)",
-                      (float) done / total * 100,
-                      done,
-                      total));
+                  String.format(Locale.getDefault(), " %.1f%%", (float) done / total * 100));
             }
             message.append("\u2026"); // `...` character
             if (mDevLoadingView != null) {

ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java

@@ -217,8 +217,7 @@ public abstract class DevSupportManagerBase
     setDevSupportEnabled(enableOnCreate);
 
     mRedBoxHandler = redBoxHandler;
-    mDevLoadingViewController =
-        new DevLoadingViewController(applicationContext, reactInstanceManagerHelper);
+    mDevLoadingViewController = new DevLoadingViewController(reactInstanceManagerHelper);
 
     mExceptionLoggers.add(new JSExceptionLogger());