Remove explicit keyword from multi-argument constructors

net/base/file_stream_unittest.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 "base/callback.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/platform_file.h"
 #include "net/base/file_stream.h"
@@ skipping 628 matching lines @@
   EXPECT_EQ(kTestDataSize * 2, file_size);
 
   EXPECT_EQ(kTestDataSize * 2, total_bytes_read);
   const std::string kExpectedFileData =
       std::string(kTestData) + std::string(kTestData);
   EXPECT_EQ(kExpectedFileData, data_read);
 }
 
 class TestWriteReadCompletionCallback : public Callback1<int>::Type {
  public:
-  explicit TestWriteReadCompletionCallback(
+  TestWriteReadCompletionCallback(
       FileStream* stream,
       int* total_bytes_written,
       int* total_bytes_read,
       std::string* data_read)
       : result_(0),
         have_result_(false),
         waiting_for_result_(false),
         stream_(stream),
         total_bytes_written_(total_bytes_written),
         total_bytes_read_(total_bytes_read),
@@ skipping 109 matching lines @@
   EXPECT_EQ(kTestDataSize * 2, file_size);
 
   EXPECT_EQ(kTestDataSize * 2, total_bytes_read);
   const std::string kExpectedFileData =
       std::string(kTestData) + std::string(kTestData);
   EXPECT_EQ(kExpectedFileData, data_read);
 }
 
 class TestWriteCloseCompletionCallback : public Callback1<int>::Type {
  public:
-  explicit TestWriteCloseCompletionCallback(FileStream* stream,
-                                            int* total_bytes_written)
+  TestWriteCloseCompletionCallback(FileStream* stream, int* total_bytes_written)
       : result_(0),
         have_result_(false),
         waiting_for_result_(false),
         stream_(stream),
         total_bytes_written_(total_bytes_written) {}
 
   int WaitForResult() {
     DCHECK(!waiting_for_result_);
     while (!have_result_) {
       waiting_for_result_ = true;
@@ skipping 95 matching lines @@
 
   // Read in the contents and make sure we get back what we expected.
   std::string read_contents;
   EXPECT_TRUE(file_util::ReadFileToString(temp_file_path(), &read_contents));
 
   EXPECT_EQ("01230123", read_contents);
 }
 
 }  // namespace
 }  // namespace net