[Extensions Bindings] Add chrome.runtime.lastError support

extensions/renderer/api_binding_unittest.cc

 // Copyright 2016 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 "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "extensions/renderer/api_binding.h"
@@ skipping 119 matching lines @@
                       v8::Local<v8::Context> context) {
     last_request_ = std::move(request);
   }
 
  protected:
   APIBindingUnittest()
       : type_refs_(APITypeReferenceMap::InitializeTypeCallback()) {}
   void SetUp() override {
     APIBindingTest::SetUp();
     request_handler_ = base::MakeUnique<APIRequestHandler>(
-        base::Bind(&RunFunctionOnGlobalAndIgnoreResult));
+        base::Bind(&RunFunctionOnGlobalAndIgnoreResult),
+        APILastError(APILastError::GetParent()));
   }
 
   void TearDown() override {
     request_handler_.reset();
     event_handler_.reset();
     binding_.reset();
     APIBindingTest::TearDown();
   }
 
   void SetFunctions(const char* functions) {
@@ skipping 862 matching lines @@
 
   blink::WebScopedUserGesture user_gesture(nullptr);
   RunFunction(function, context, arraysize(argv), argv);
   ASSERT_TRUE(last_request());
   EXPECT_TRUE(last_request()->has_user_gesture);
 
   reset_last_request();
 }
 
 }  // namespace extensions