Change === to identical in the dart2js source.

sdk/lib/_internal/compiler/implementation/ssa/nodes.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
index 8a58bcfbddf8d302a28dc03e8e536fc64819a6d9..d60b86e0754782dad68f1dcf36ec6be3a9906194 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
@@ -2246,7 +2246,7 @@ class HEquals extends HRelational {
   accept(HVisitor visitor) => visitor.visitEquals(this);
 
   bool isBuiltin(HTypeMap types) {
-    // All primitive types have === semantics.
+    // All primitive types have 'identical' semantics.
     // Note that this includes all constants except the user-constructed
     // objects.
     return types[left].isPrimitiveOrNull() || right.isConstantNull();
@@ -2262,7 +2262,7 @@ class HEquals extends HRelational {
                                             Compiler compiler) {
     HType propagatedType = types[this];
     if (input == left && types[right].isUseful()) {
-      // All our useful types have === semantics. But we don't want to
+      // All our useful types have 'identical' semantics. But we don't want to
       // speculatively test for all possible types. Therefore we try to match
       // the two types. That is, if we see x == 3, then we speculatively test
       // if x is a number and bailout if it isn't.