Fix unused lambda captures in //content.

content/renderer/presentation/presentation_dispatcher_unittest.cc

 // Copyright 2017 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 <memory>
 #include <utility>
 
 #include "base/run_loop.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/renderer/presentation/presentation_dispatcher.h"
@@ skipping 228 matching lines @@
       urls_, base::MakeUnique<TestWebPresentationConnectionCallback>(
                  url1_, presentation_id_));
   run_loop.RunUntilIdle();
 }
 
 TEST_F(PresentationDispatcherTest, TestStartSessionError) {
   WebString error_message = WebString::fromUTF8("Test error message");
   base::RunLoop run_loop;
 
   EXPECT_CALL(presentation_service_, StartSession(gurls_, _))
-      .WillOnce(Invoke([this, &error_message](
+      .WillOnce(Invoke([&error_message](
           const std::vector<GURL>& presentation_urls,
           const PresentationService::StartSessionCallback& callback) {
         PresentationErrorPtr error(PresentationError::New());
         error->error_type = PresentationErrorType::NO_AVAILABLE_SCREENS;
         error->message = error_message.utf8();
         callback.Run(PresentationSessionInfoPtr(), std::move(error));
       }));
   dispatcher_.startSession(
       urls_,
       base::MakeUnique<TestWebPresentationConnectionErrorCallback>(
@@ skipping 153 matching lines @@
 }
 
 TEST_F(PresentationDispatcherTest, TestSetDefaultPresentationUrls) {
   base::RunLoop run_loop;
   EXPECT_CALL(presentation_service_, SetDefaultPresentationUrls(gurls_));
   dispatcher_.setDefaultPresentationUrls(urls_);
   run_loop.RunUntilIdle();
 }
 
 }  // namespace content