Rename BEGIN_PROXY_MAP --> BEGIN_SIGNALLING_PROXY_MAP.

webrtc/api/dtmfsender.h

Index: webrtc/api/dtmfsender.h
diff --git a/webrtc/api/dtmfsender.h b/webrtc/api/dtmfsender.h
index ae8aa445410cc7ba3769e6be03e2838500499f66..37f950ccad486ee41eb013fbd98d5db550b0fcd3 100644
--- a/webrtc/api/dtmfsender.h
+++ b/webrtc/api/dtmfsender.h
@@ -103,7 +103,7 @@ class DtmfSender
 };
 
 // Define proxy for DtmfSenderInterface.
-BEGIN_PROXY_MAP(DtmfSender)
+BEGIN_SIGNALLING_PROXY_MAP(DtmfSender)
   PROXY_METHOD1(void, RegisterObserver, DtmfSenderObserverInterface*)
   PROXY_METHOD0(void, UnregisterObserver)
   PROXY_METHOD0(bool, CanInsertDtmf)
@@ -112,7 +112,7 @@ BEGIN_PROXY_MAP(DtmfSender)
   PROXY_CONSTMETHOD0(std::string, tones)
   PROXY_CONSTMETHOD0(int, duration)
   PROXY_CONSTMETHOD0(int, inter_tone_gap)
-END_PROXY()
+END_SIGNALLING_PROXY()
 
 // Get DTMF code from the DTMF event character.
 bool GetDtmfCode(char tone, int* code);