Use "int" instead of "long" for bindings where the WebIDL uses "long".

Source/modules/mediastream/RTCDTMFSender.cpp

Index: Source/modules/mediastream/RTCDTMFSender.cpp
diff --git a/Source/modules/mediastream/RTCDTMFSender.cpp b/Source/modules/mediastream/RTCDTMFSender.cpp
index 17695e566aef481e77527e1b9a722cfb88cb9dce..b382fabe38fc24b5e025d59d8279a987ce29029b 100644
--- a/Source/modules/mediastream/RTCDTMFSender.cpp
+++ b/Source/modules/mediastream/RTCDTMFSender.cpp
@@ -36,11 +36,11 @@
 
 namespace WebCore {
 
-static const long minToneDurationMs = 70;
-static const long defaultToneDurationMs = 100;
-static const long maxToneDurationMs = 6000;
-static const long minInterToneGapMs = 50;
-static const long defaultInterToneGapMs = 50;
+static const int minToneDurationMs = 70;
+static const int defaultToneDurationMs = 100;
+static const int maxToneDurationMs = 6000;
+static const int minInterToneGapMs = 50;
+static const int defaultInterToneGapMs = 50;
 
 PassRefPtr<RTCDTMFSender> RTCDTMFSender::create(ScriptExecutionContext* context, RTCPeerConnectionHandler* peerConnectionHandler, PassRefPtr<MediaStreamTrack> prpTrack, ExceptionState& es)
 {
@@ -93,12 +93,12 @@ void RTCDTMFSender::insertDTMF(const String& tones, ExceptionState& es)
     insertDTMF(tones, defaultToneDurationMs, defaultInterToneGapMs, es);
 }
 
-void RTCDTMFSender::insertDTMF(const String& tones, long duration, ExceptionState& es)
+void RTCDTMFSender::insertDTMF(const String& tones, int duration, ExceptionState& es)
 {
     insertDTMF(tones, duration, defaultInterToneGapMs, es);
 }
 
-void RTCDTMFSender::insertDTMF(const String& tones, long duration, long interToneGap, ExceptionState& es)
+void RTCDTMFSender::insertDTMF(const String& tones, int duration, int interToneGap, ExceptionState& es)
 {
     if (!canInsertDTMF()) {
         es.throwDOMException(NotSupportedError);