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

net/spdy/spdy_session_spdy2_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/spdy/spdy_session.h"
 
 #include "net/base/host_cache.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_log_unittest.h"
 #include "net/spdy/spdy_io_buffer.h"
 #include "net/spdy/spdy_session_pool.h"
 #include "net/spdy/spdy_stream.h"
 #include "net/spdy/spdy_test_util_spdy2.h"
 #include "testing/platform_test.h"
 
 using namespace net::test_spdy2;
 
 namespace net {
 
 namespace {
 
 static int g_delta_seconds = 0;
 base::TimeTicks TheNearFuture() {
   return base::TimeTicks::Now() + base::TimeDelta::FromSeconds(g_delta_seconds);
 }
 
 class ClosingDelegate : public SpdyStream::Delegate {
  public:
-  ClosingDelegate(SpdyStream* stream) : stream_(stream) {}
+  explicit ClosingDelegate(SpdyStream* stream) : stream_(stream) {}
 
   // SpdyStream::Delegate implementation:
   virtual bool OnSendHeadersComplete(int status) OVERRIDE {
     return true;
   }
   virtual int OnSendBody() OVERRIDE {
     return OK;
   }
   virtual int OnSendBodyComplete(int status, bool* eof) OVERRIDE {
     return OK;
@@ skipping 1540 matching lines @@
   session->CloseSessionOnError(ERR_ABORTED, true, "");
 
   EXPECT_TRUE(spdy_stream1->closed());
   EXPECT_TRUE(spdy_stream2->closed());
 
   spdy_stream1 = NULL;
   spdy_stream2 = NULL;
 }
 
 }  // namespace net