Use the new service protocol message names (#35482)

* Use the new service protocol message names
  clearVMTimeline
  setVMTimelineFlags
  getVMTimeline
  getVMTimelineFlags

* Fix clearTimeline at another spot.

packages/flutter_driver/lib/src/driver/driver.dart

@@ -136,9 +136,9 @@ class FlutterDriver {
        _driverId = _nextDriverId++;
 
   static const String _flutterExtensionMethodName = 'ext.flutter.driver';
-  static const String _setVMTimelineFlagsMethodName = '_setVMTimelineFlags';
-  static const String _getVMTimelineMethodName = '_getVMTimeline';
-  static const String _clearVMTimelineMethodName = '_clearVMTimeline';
+  static const String _setVMTimelineFlagsMethodName = 'setVMTimelineFlags';
+  static const String _getVMTimelineMethodName = 'getVMTimeline';
+  static const String _clearVMTimelineMethodName = 'clearVMTimeline';
   static const String _collectAllGarbageMethodName = '_collectAllGarbage';
 
   static int _nextDriverId = 0;

packages/flutter_driver/test/flutter_driver_test.dart

@@ -369,7 +369,7 @@ void main() {
     group('clearTimeline', () {
       test('clears timeline', () async {
         bool clearWasCalled = false;
-        when(mockPeer.sendRequest('_clearVMTimeline', argThat(equals(<String, dynamic>{}))))
+        when(mockPeer.sendRequest('clearVMTimeline', argThat(equals(<String, dynamic>{}))))
           .thenAnswer((Invocation invocation) async {
             clearWasCalled = true;
             return null;
@@ -385,25 +385,25 @@ void main() {
       setUp(() async {
         log = <String>[];
 
-        when(mockPeer.sendRequest('_clearVMTimeline', argThat(equals(<String, dynamic>{}))))
+        when(mockPeer.sendRequest('clearVMTimeline', argThat(equals(<String, dynamic>{}))))
           .thenAnswer((Invocation invocation) async {
             log.add('clear');
             return null;
           });
 
-        when(mockPeer.sendRequest('_setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[all]'}))))
+        when(mockPeer.sendRequest('setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[all]'}))))
           .thenAnswer((Invocation invocation) async {
             log.add('startTracing');
             return null;
           });
 
-        when(mockPeer.sendRequest('_setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[]'}))))
+        when(mockPeer.sendRequest('setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[]'}))))
           .thenAnswer((Invocation invocation) async {
             log.add('stopTracing');
             return null;
           });
 
-        when(mockPeer.sendRequest('_getVMTimeline')).thenAnswer((Invocation invocation) async {
+        when(mockPeer.sendRequest('getVMTimeline')).thenAnswer((Invocation invocation) async {
           log.add('download');
           return <String, dynamic>{
             'traceEvents': <dynamic>[
@@ -451,19 +451,19 @@ void main() {
         bool startTracingCalled = false;
         bool stopTracingCalled = false;
 
-        when(mockPeer.sendRequest('_setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[Dart, GC, Compiler]'}))))
+        when(mockPeer.sendRequest('setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[Dart, GC, Compiler]'}))))
           .thenAnswer((Invocation invocation) async {
             startTracingCalled = true;
             return null;
           });
 
-        when(mockPeer.sendRequest('_setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[]'}))))
+        when(mockPeer.sendRequest('setVMTimelineFlags', argThat(equals(<String, dynamic>{'recordedStreams': '[]'}))))
           .thenAnswer((Invocation invocation) async {
             stopTracingCalled = true;
             return null;
           });
 
-        when(mockPeer.sendRequest('_getVMTimeline')).thenAnswer((Invocation invocation) async {
+        when(mockPeer.sendRequest('getVMTimeline')).thenAnswer((Invocation invocation) async {
           return <String, dynamic>{
             'traceEvents': <dynamic>[
               <String, String>{

packages/flutter_tools/lib/src/vmservice.dart

@@ -948,13 +948,13 @@ class VM extends ServiceObjectOwner {
   }
 
   Future<Map<String, dynamic>> clearVMTimeline() {
-    return invokeRpcRaw('_clearVMTimeline');
+    return invokeRpcRaw('clearVMTimeline');
   }
 
   Future<Map<String, dynamic>> setVMTimelineFlags(List<String> recordedStreams) {
     assert(recordedStreams != null);
     return invokeRpcRaw(
-      '_setVMTimelineFlags',
+      'setVMTimelineFlags',
       params: <String, dynamic>{
         'recordedStreams': recordedStreams,
       },
@@ -962,7 +962,7 @@ class VM extends ServiceObjectOwner {
   }
 
   Future<Map<String, dynamic>> getVMTimeline() {
-    return invokeRpcRaw('_getVMTimeline');
+    return invokeRpcRaw('getVMTimeline');
   }
 
   Future<void> refreshViews({ bool waitForViews = false }) async {