Update Performance documentation. (#7181)

* Add secret to performance integration tests.

* Updat pull request path to trigger the GHA.

* Remove pull request condition.

* Remove dev test App GoogleService-Info.plist

* Create README.md

* Fix style.

* Add gitignore for GoogleService-Info.plist.

* Move .gitignore to root directory.

* Update Performance content to README.

* Update Performance README.

* Update README.md

* Update Performance dev test App README.

* Fix style.

* Incorporate comments.

* Update performance supported platforms.

Author: jeremyjiang-dev

FirebasePerformance/README.md

@@ -1,10 +1,9 @@
-# Firebase Performance
+# Firebase Performance Monitoring
 
-Firebase Performance is a free mobile app performance analytics service. It
+[Firebase Performance Monitoring](https://firebase.google.com/docs/perf-mon) is a free mobile app performance analytics service. It
 provides detailed information about the performance of your apps automatically,
 but works at its best with Timers set by you. For more information about app
-performance and many other cool mobile services, check out [Firebase]
-(https://firebase.google.com).
+performance and many other cool mobile services, check out [Firebase](https://firebase.google.com/).
 
 ## Prereqs
 
@@ -20,7 +19,7 @@ The above command should be sufficient for most scenarios. Few more options list
 
 - `sh generate_project.sh -e "prod"`
 
-### Generate project for Autopush environment
+### Generate project for Autopush environment. The events generated for the Autopush environment will not be available on the console outside of Google as these are processed on our staging servers.
 
 - `sh generate_project.sh` (or) `sh generate_project.sh -e "autopush"`
 

FirebasePerformance/Tests/TestApp/README.md

@@ -2,10 +2,11 @@
 
 ## Setup
 
-Download the `GoogleService-Info.plist` file from [Firebase Console](https://console.firebase.google.com/)
-(for whatever Firebase project you have or want to integrate the `dev-app`). For Autopush environment, store the
-`GoogleService-Info.plist` under [Plists/Autopush/FIRPerfTestAppAutopush/](./Plists/Autopush/FIRPerfTestAppAutopush/).
-For Prod environment, project, store the `GoogleService-Info.plist` under [Plists/Prod/FIRPerfTestApp/](./Plists/Prod/FIRPerfTestApp/).
+For Prod environment, create a [Firebase project]((https://console.firebase.google.com/)) with bundle ID `com.google.FIRPerfTestApp`. Download and store the `GoogleService-Info.plist` under [Plists/Prod/FIRPerfTestApp/](./Plists/Prod/FIRPerfTestApp/). This should be sufficient for most scenarios.
+
+For Autopush environment, create a [Firebase project]((https://console.firebase.google.com/)) with bundle ID `com.google.FIRPerfTestAppAutopush`. Download and store the
+`GoogleService-Info.plist` under [Plists/Autopush/FIRPerfTestAppAutopush/](./Plists/Autopush/FIRPerfTestAppAutopush/). The events generated for the Autopush environment will not be available on the console outside of Google as these are processed on our staging servers.
+
 
 ## Build
 

README.md

@@ -20,6 +20,7 @@
 [![Actions Status][gh-inappmessaging-badge]][gh-actions]
 [![Actions Status][gh-interop-badge]][gh-actions]
 [![Actions Status][gh-messaging-badge]][gh-actions]
+[![Actions Status][gh-performance-badge]][gh-actions]
 [![Actions Status][gh-remoteconfig-badge]][gh-actions]
 [![Actions Status][gh-storage-badge]][gh-actions]
 [![Actions Status][gh-symbolcollision-badge]][gh-actions]
@@ -194,6 +195,12 @@ To run against a production instance, provide a valid GoogleServices-Info.plist
 [public](https://firebase.google.com/docs/database/security/quickstart) while your tests are
 running.
 
+### Firebase Performance Monitoring
+If you're doing specific Firebase Performance Monitoring development, see
+[the Performance README](FirebasePerformance/README.md) for instructions about building the SDK
+and [the Performance TestApp README](FirebasePerformance/Tests/TestApp/README.md) for instructions about
+integrating Performance with the dev test App.
+
 ### Firebase Storage
 
 To run the Storage Integration tests, follow the instructions in
@@ -253,6 +260,7 @@ pod 'Firebase/Database'      # No watchOS support yet
 pod 'Firebase/Firestore'     # No watchOS support yet
 pod 'Firebase/Functions'     # No watchOS support yet
 pod 'Firebase/Messaging'
+pod 'Firebase/Performance'   # No macOS, tvOS, watchOS, and Catalyst support yet
 pod 'Firebase/RemoteConfig'  # No watchOS support yet
 pod 'Firebase/Storage'
 ```
@@ -305,6 +313,7 @@ Your use of Firebase is governed by the
 [gh-inappmessaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/inappmessaging/badge.svg
 [gh-interop-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/interop/badge.svg
 [gh-messaging-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/messaging/badge.svg
+[gh-performance-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/performance/badge.svg
 [gh-remoteconfig-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/remoteconfig/badge.svg
 [gh-storage-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/storage/badge.svg
 [gh-symbolcollision-badge]: https://github.com/firebase/firebase-ios-sdk/workflows/symbolcollision/badge.svg