Wait properly for renderer crashes

content/common/gpu/gpu_channel.cc

 // Copyright (c) 2011 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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/common/gpu/gpu_channel.h"
 
@@ skipping 378 matching lines @@
       shutdown_event));
 
   return true;
 }
 
 std::string GpuChannel::GetChannelName() {
   return StringPrintf("%d.r%d.gpu", base::GetCurrentProcId(), renderer_id_);
 }
 
 #if defined(OS_POSIX)
-int GpuChannel::GetRendererFileDescriptor() {
-  int fd = -1;
-  if (channel_.get()) {
-    fd = channel_->GetClientFileDescriptor();
+int GpuChannel::TakeRendererFileDescriptor() {
+  if (!channel_.get()) {
+    NOTREACHED();
+    return -1;
   }
-  return fd;
+  return channel_->TakeClientFileDescriptor();
 }
 #endif  // defined(OS_POSIX)