Add missing (and remove superfluous) 'explicit' from constructors.

chrome/renderer/net/predictor_queue_unittest.cc

 // Copyright (c) 2010 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 <sstream>
 
 #include "chrome/renderer/net/predictor_queue.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Single threaded tests of DnsQueue functionality.
 
 namespace {
 
 class DnsQueueTest : public testing::Test {
 };
 
 // Define a helper class that does Push'es and Pop's of numbers.
 // This makes it easy to test a LOT of reads, and keep the expected Pop
 // value in sync with the Push value.
 class DnsQueueSequentialTester {
  public:
-  DnsQueueSequentialTester(DnsQueue& buffer, int32 read_counter = 0,
+  explicit DnsQueueSequentialTester(DnsQueue& buffer, int32 read_counter = 0,
                            int32 write_counter = 0);
 
   // Return of false means buffer was full, or would not take entry.
   bool Push(void);  // Push the string value of next number.
 
   // Return of false means buffer returned wrong value.
   bool Pop(void);  // Validate string value of next read.
 
  private:
   DnsQueue* buffer_;
@@ skipping 220 matching lines @@
   }
 
   // Read back the accumulated 3 extra blocks.
   EXPECT_TRUE(tester.Pop());
   EXPECT_TRUE(tester.Pop());
   EXPECT_TRUE(tester.Pop());
   EXPECT_FALSE(tester.Pop());
 }
 
 };  // namespace