Use std::min and std::max instead of self-defined functions such as rtc::_min/_max.

R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/35079004

Cr-Commit-Position: refs/heads/master@{#8347}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8347 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/base/proxyserver.cc b/webrtc/base/proxyserver.cc
index 548cfbf..a17983d 100644
--- a/webrtc/base/proxyserver.cc
+++ b/webrtc/base/proxyserver.cc
@@ -124,7 +124,7 @@
   if (buffer->GetBuffered(&size) && size == 0) {
     void* p = buffer->GetWriteBuffer(&size);
     read = socket->Recv(p, size);
-    buffer->ConsumeWriteBuffer(_max(read, 0));
+    buffer->ConsumeWriteBuffer(std::max(read, 0));
   }
 }
 
@@ -134,7 +134,7 @@
   int written;
   const void* p = buffer->GetReadData(&size);
   written = socket->Send(p, size);
-  buffer->ConsumeReadData(_max(written, 0));
+  buffer->ConsumeReadData(std::max(written, 0));
 }
 
 void ProxyBinding::Destroy() {