IDL: Support union type arrays and sequences for method arguments

Source/core/testing/UnionTypesTest.cpp

Index: Source/core/testing/UnionTypesTest.cpp
diff --git a/Source/core/testing/UnionTypesTest.cpp b/Source/core/testing/UnionTypesTest.cpp
index 5e34b96cf0ad2e699b7e18fd6d53499783c32285..a5431760791ba06e9f6f521c7a18fc9e331f1806 100644
--- a/Source/core/testing/UnionTypesTest.cpp
+++ b/Source/core/testing/UnionTypesTest.cpp
@@ -5,6 +5,8 @@
 #include "config.h"
 #include "UnionTypesTest.h"
 
+#include "wtf/text/StringBuilder.h"
+
 namespace blink {
 
 void UnionTypesTest::doubleOrStringAttribute(DoubleOrString& doubleOrString)
@@ -50,4 +52,28 @@ String UnionTypesTest::doubleOrStringArg(DoubleOrString& doubleOrString)
     return String();
 }
 
+String UnionTypesTest::doubleOrStringArrayArg(Vector<DoubleOrString>& array)
+{
+    if (!array.size())
+        return "";
+
+    StringBuilder builder;
+    for (DoubleOrString& doubleOrString : array) {
+        ASSERT(!doubleOrString.isNull());
+        if (doubleOrString.isDouble())
+            builder.append("double: " + String::numberToStringECMAScript(doubleOrString.getAsDouble()));
+        else if (doubleOrString.isString())
+            builder.append("string: " + doubleOrString.getAsString());
+        else
+            ASSERT_NOT_REACHED();
+        builder.append(", ");
+    }
+    return builder.substring(0, builder.length() - 2);
+}
+
+String UnionTypesTest::doubleOrStringSequenceArg(Vector<DoubleOrString>& sequence)
+{
+    return doubleOrStringArrayArg(sequence);
+}
+
 }