base: Remove the string logging from CHECK().

content/public/browser/browser_child_process_host_iterator.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/public/browser/browser_child_process_host_iterator.h"
 
 #include "base/logging.h"
 #include "content/browser/browser_child_process_host_impl.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace content {
 
 BrowserChildProcessHostIterator::BrowserChildProcessHostIterator()
     : all_(true), process_type_(PROCESS_TYPE_UNKNOWN) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)) <<
-      "BrowserChildProcessHostIterator must be used on the IO thread.";
+  // BrowserChildProcessHostIterator must be used on the IO thread.
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   iterator_ = BrowserChildProcessHostImpl::GetIterator()->begin();
 }
 
 BrowserChildProcessHostIterator::BrowserChildProcessHostIterator(int type)
     : all_(false), process_type_(type) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)) <<
-      "BrowserChildProcessHostIterator must be used on the IO thread.";
+  // BrowserChildProcessHostIterator must be used on the IO thread.
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK_NE(PROCESS_TYPE_RENDERER, type) <<
       "BrowserChildProcessHostIterator doesn't work for renderer processes; "
       "try RenderProcessHost::AllHostsIterator() instead.";
   iterator_ = BrowserChildProcessHostImpl::GetIterator()->begin();
   if (!Done() && (*iterator_)->GetData().process_type != process_type_)
     ++(*this);
 }
 
 BrowserChildProcessHostIterator::~BrowserChildProcessHostIterator() {
 }
@@ skipping 27 matching lines @@
   CHECK(!Done());
   return (*iterator_)->Send(message);
 }
 
 BrowserChildProcessHostDelegate*
     BrowserChildProcessHostIterator::GetDelegate() {
   return (*iterator_)->delegate();
 }
 
 }  // namespace content