experiment with -Wimplicit-fallthrough

content/browser/browser_child_process_host_impl.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 "content/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 278 matching lines @@
         // Report that this child process was killed.
         UMA_HISTOGRAM_ENUMERATION("ChildProcess.Killed2",
                                   data_.process_type,
                                   PROCESS_TYPE_MAX);
         break;
       }
       case base::TERMINATION_STATUS_STILL_RUNNING: {
         UMA_HISTOGRAM_ENUMERATION("ChildProcess.DisconnectedAlive2",
                                   data_.process_type,
                                   PROCESS_TYPE_MAX);
+        break;
       }
       default:
         break;
     }
     UMA_HISTOGRAM_ENUMERATION("ChildProcess.Disconnected2",
                               data_.process_type,
                               PROCESS_TYPE_MAX);
   }
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&NotifyProcessHostDisconnected, data_));
@@ skipping 43 matching lines @@
 
 void BrowserChildProcessHostImpl::OnProcessExitedEarly(
     base::WaitableEvent* event) {
   DeleteProcessWaitableEvent(event);
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content