Fix bug so instance_methods of bridged classes acts correctly

corelib/module.rb

@@ -343,6 +343,10 @@ def instance_methods(include_super = false)
           continue;
         }
 
+        if (!include_super && proto[prop]._donated) {
+          continue;
+        }
+
         if (prop.charAt(0) === '$') {
           methods.push(prop.substr(1));
         }

corelib/runtime.js

@@ -628,6 +628,7 @@
         for (var j = 0, jj = defined.length; j < jj; j++) {
           var method = defined[j];
           dest[method] = klass._proto[method];
+          dest[method]._donated = true;
         }
 
         if (includee.__dep__) {

spec/opal/runtime/bridged_classes_spec.rb

@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+describe "Bridged Classes" do
+  describe ".instance_methdods" do
+    it "should report methods for class" do
+      Array.instance_methods.should include(:shift)
+    end
+
+    it "should not include methods donated from Object/Kernel" do
+      Array.instance_methods.should_not include(:class)
+    end
+
+    it "should not include methods donated from BasicObject" do
+      Array.instance_methods.should_not include(:__send__)
+      Array.instance_methods.should_not include(:send)
+    end
+  end
+end