Fix for issue 7089 (Symbols::New was not quite working correctly

vm/object_test.cc

Index: vm/object_test.cc
===================================================================
--- vm/object_test.cc	(revision 15670)
+++ vm/object_test.cc	(working copy)
@@ -268,11 +268,12 @@
   const int kMonkeyLen = 4;
   const uint8_t monkey_utf8[kMonkeyLen] = { 0xf0, 0x9f, 0x90, 0xb5 };
   const String& monkey_face =
-      String::Handle(String::New(monkey_utf8, kMonkeyLen));
+      String::Handle(String::FromUTF8(monkey_utf8, kMonkeyLen));
   const int kDogLen = 4;
   // 0x1f436 DOG FACE.
   const uint8_t dog_utf8[kDogLen] = { 0xf0, 0x9f, 0x90, 0xb6 };
-  const String& dog_face = String::Handle(String::New(dog_utf8, kDogLen));
+  const String& dog_face =
+      String::Handle(String::FromUTF8(dog_utf8, kDogLen));
   EXPECT_EQ(0, monkey_face.CompareTo(monkey_face));
   EXPECT_EQ(0, dog_face.CompareTo(dog_face));
   EXPECT(monkey_face.CompareTo(dog_face) < 0);
@@ -281,7 +282,8 @@
   const int kDominoLen = 4;
   // 0x1f036 DOMINO TILE HORIZONTAL-00-05.
   const uint8_t domino_utf8[kDominoLen] = { 0xf0, 0x9f, 0x80, 0xb6 };
-  const String& domino = String::Handle(String::New(domino_utf8, kDominoLen));
+  const String& domino =
+      String::Handle(String::FromUTF8(domino_utf8, kDominoLen));
   EXPECT_EQ(0, domino.CompareTo(domino));
   EXPECT(domino.CompareTo(dog_face) < 0);
   EXPECT(domino.CompareTo(monkey_face) < 0);
@@ -516,7 +518,7 @@
 
   const uint8_t* motto =
       reinterpret_cast<const uint8_t*>("Dart's bescht wos je hets gits");
-  const String& str2 = String::Handle(String::New(motto+7, 4));
+  const String& str2 = String::Handle(String::FromUTF8(motto+7, 4));
   EXPECT_EQ(4, str2.Length());
   EXPECT_EQ('b', str2.CharAt(0));
   EXPECT_EQ('e', str2.CharAt(1));
@@ -544,7 +546,7 @@
 
   const intptr_t kCharsLen = 8;
   const uint8_t chars[kCharsLen] = { 1, 2, 127, 64, 92, 0, 55, 55 };
-  const String& str8 = String::Handle(String::New(chars, kCharsLen));
+  const String& str8 = String::Handle(String::FromUTF8(chars, kCharsLen));
   EXPECT_EQ(kCharsLen, str8.Length());
   EXPECT_EQ(1, str8.CharAt(0));
   EXPECT_EQ(127, str8.CharAt(2));