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

net/http/http_pipelined_connection_impl_unittest.cc

 // Copyright (c) 2012 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 "net/http/http_pipelined_connection_impl.h"
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 922 matching lines @@
   // 1. DoReadHeadersLoop, which will post:
   // 2. InvokeUserCallback
   SuddenCloseObserver observer(evicted_stream.get(), 2);
   MessageLoop::current()->AddTaskObserver(&observer);
   MessageLoop::current()->RunUntilIdle();
   EXPECT_FALSE(evicted_callback.have_result());
 }
 
 class StreamDeleter {
  public:
-  StreamDeleter(HttpStream* stream) :
+  explicit StreamDeleter(HttpStream* stream) :
       stream_(stream),
       ALLOW_THIS_IN_INITIALIZER_LIST(callback_(
           base::Bind(&StreamDeleter::OnIOComplete, base::Unretained(this)))) {
   }
 
   const CompletionCallback& callback() { return callback_; }
 
  private:
   void OnIOComplete(int result) {
     delete stream_;
@@ skipping 582 matching lines @@
   MessageLoop::current()->RunUntilIdle();
 
   stream->Close(false);
   EXPECT_CALL(delegate_, OnPipelineHasCapacity(pipeline_.get())).Times(1);
   stream.reset(NULL);
 }
 
 }  // anonymous namespace
 
 }  // namespace net