add optional request field to record time at which client made request

editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java

Index: editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java
diff --git a/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java b/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java
index 1005710070aad233acf30db65617068feb2c4909..d59addad9cb10431b47441ce0dc23a94d560fddb 100644
--- a/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java
+++ b/editor/tools/plugins/com.google.dart.server_test/src/com/google/dart/server/internal/remote/RemoteAnalysisServerImplTest.java
@@ -85,6 +85,7 @@ import com.google.dart.server.generated.types.SourceEdit;
 import com.google.dart.server.generated.types.SourceFileEdit;
 import com.google.dart.server.generated.types.TypeHierarchyItem;
 import com.google.dart.server.internal.AnalysisServerError;
+import com.google.dart.server.internal.remote.utilities.RequestUtilities;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
@@ -4201,6 +4202,18 @@ public class RemoteAnalysisServerImplTest extends AbstractRemoteServerTest {
     server.server_shutdown();
   }
 
+  @Override
+  protected void setUp() throws Exception {
+    super.setUp();
+    RequestUtilities.setIncludeRequestTime(false);
+  }
+
+  @Override
+  protected void tearDown() throws Exception {
+    RequestUtilities.setIncludeRequestTime(true);
+    super.tearDown();
+  }
+
   private void assertLocation(Location location, String file, int offset, int length,
       int startLine, int startColumn) {
     assertEquals(file, location.getFile());