PPAPI: Really force-free NPObjects on Instance destruction.

ppapi/tests/testing_instance.h

Index: ppapi/tests/testing_instance.h
diff --git a/ppapi/tests/testing_instance.h b/ppapi/tests/testing_instance.h
index 7b0517445655ac0a62d46b09fbb93c0a0dd1d2a0..41ec63e9cd20654b130f2cd5f4a48ce7fab3d1c2 100644
--- a/ppapi/tests/testing_instance.h
+++ b/ppapi/tests/testing_instance.h
@@ -89,6 +89,11 @@ pp::InstancePrivate {
   // Sets the given cookie in the current document.
   void SetCookie(const std::string& name, const std::string& value);
 
+  // Add a post-condition to the JavaScript on the test_case.html page. This
+  // JavaScript code will be run after the instance is shut down and must
+  // evaluate to |true| or the test will fail.
+  void AddPostCondition(const std::string& script);
+
  private:
   void ExecuteTests(int32_t unused);
 
@@ -106,6 +111,10 @@ pp::InstancePrivate {
   // Runs 'PostMessage_SendingData.
   std::string FilterForTestName(const std::string& name);
 
+  // Sends a test command to the page using PostMessage.
+  void SendTestCommand(const std::string& command);
+  void SendTestCommand(const std::string& command, const std::string& params);
+
   // Appends a list of available tests to the console in the document.
   void LogAvailableTests();