Make it possible to enable/disable specific ppapi tests. Migrate PostMessage tests.

ppapi/tests/test_var.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/tests/test_var.h"
 
 #include <string.h>
 
 #include <limits>
 
@@ skipping 13 matching lines @@
 }  // namespace
 
 REGISTER_TEST_CASE(Var);
 
 bool TestVar::Init() {
   var_interface_ = reinterpret_cast<const PPB_Var*>(
       pp::Module::Get()->GetBrowserInterface(PPB_VAR_INTERFACE));
   return var_interface_ && InitTestingInterface();
 }
 
-void TestVar::RunTest() {
-  RUN_TEST(BasicString);
-  RUN_TEST(InvalidAndEmpty);
-  RUN_TEST(InvalidUtf8);
-  RUN_TEST(NullInputInUtf8Conversion);
-  RUN_TEST(ValidUtf8);
-  RUN_TEST(Utf8WithEmbeddedNulls);
-  RUN_TEST(VarToUtf8ForWrongType);
+void TestVar::RunTests(const std::string& filter) {
+  RUN_TEST(BasicString, filter);
+  RUN_TEST(InvalidAndEmpty, filter);
+  RUN_TEST(InvalidUtf8, filter);
+  RUN_TEST(NullInputInUtf8Conversion, filter);
+  RUN_TEST(ValidUtf8, filter);
+  RUN_TEST(Utf8WithEmbeddedNulls, filter);
+  RUN_TEST(VarToUtf8ForWrongType, filter);
 }
 
 std::string TestVar::TestBasicString() {
   uint32_t before_object = testing_interface_->GetLiveObjectsForInstance(
       instance_->pp_instance());
   {
     const char kStr[] = "Hello";
     const uint32_t kStrLen(arraysize(kStr) - 1);
     PP_Var str = var_interface_->VarFromUtf8(pp::Module::Get()->pp_module(),
                                              kStr, kStrLen);
@@ skipping 193 matching lines @@
   if (length != 0) {
     return "Expected 0 on string conversion from Double var.";
   }
   if (result != NULL) {
     return "Expected NULL on string conversion from Double var.";
   }
 
   PASS();
 }