Have all clone() declarations declare a throws clause

Author: jwren

third_party/src/main/java/com/jetbrains/lang/dart/ide/runner/server/DartCommandLineRunnerParameters.java

@@ -168,7 +168,7 @@ public void check(final @NotNull Project project) throws RuntimeConfigurationErr
   }
 
   @Override
-  protected DartCommandLineRunnerParameters clone() {
+  protected DartCommandLineRunnerParameters clone() throws CloneNotSupportedException {
     try {
       final DartCommandLineRunnerParameters clone = (DartCommandLineRunnerParameters)super.clone();
       clone.myEnvs = new LinkedHashMap<>();

third_party/src/main/java/com/jetbrains/lang/dart/ide/runner/server/DartRemoteDebugParameters.java

@@ -15,7 +15,7 @@ public void setDartProjectPath(final @NotNull String dartProjectPath) {
   }
 
   @Override
-  protected DartRemoteDebugParameters clone() {
+  protected DartRemoteDebugParameters clone() throws CloneNotSupportedException {
     try {
       return (DartRemoteDebugParameters)super.clone();
     }