Replace NULL with nullptr in all C++ files.

webrtc/modules/video_capture/device_info_impl.cc

Index: webrtc/modules/video_capture/device_info_impl.cc
diff --git a/webrtc/modules/video_capture/device_info_impl.cc b/webrtc/modules/video_capture/device_info_impl.cc
index f3eefc8b069c4a0c7c5403dcd42425ad30bd3253..6cadf3e015bd030a15b0709601d534927da81ac7 100644
--- a/webrtc/modules/video_capture/device_info_impl.cc
+++ b/webrtc/modules/video_capture/device_info_impl.cc
@@ -24,10 +24,9 @@ namespace webrtc
 namespace videocapturemodule
 {
 DeviceInfoImpl::DeviceInfoImpl()
-    : _apiLock(*RWLockWrapper::CreateRWLock()), _lastUsedDeviceName(NULL),
-      _lastUsedDeviceNameLength(0)
-{
-}
+    : _apiLock(*RWLockWrapper::CreateRWLock()),
+      _lastUsedDeviceName(nullptr),
+      _lastUsedDeviceNameLength(0) {}
 
 DeviceInfoImpl::~DeviceInfoImpl(void)
 {
@@ -76,22 +75,20 @@ int32_t DeviceInfoImpl::GetCapability(const char* deviceUniqueIdUTF8,
                                       const uint32_t deviceCapabilityNumber,
                                       VideoCaptureCapability& capability)
 {
-    assert(deviceUniqueIdUTF8 != NULL);
+  assert(deviceUniqueIdUTF8 != nullptr);
 
-    ReadLockScoped cs(_apiLock);
+  ReadLockScoped cs(_apiLock);
 
-    if ((_lastUsedDeviceNameLength != strlen((char*) deviceUniqueIdUTF8))
+  if ((_lastUsedDeviceNameLength != strlen((char*)deviceUniqueIdUTF8))
 #if defined(WEBRTC_MAC) || defined(WEBRTC_LINUX)
-        || (strncasecmp((char*)_lastUsedDeviceName,
-                        (char*) deviceUniqueIdUTF8,
-                        _lastUsedDeviceNameLength)!=0))
-#else
-        || (_strnicmp((char*) _lastUsedDeviceName,
-                      (char*) deviceUniqueIdUTF8,
+      || (strncasecmp((char*)_lastUsedDeviceName, (char*)deviceUniqueIdUTF8,
                       _lastUsedDeviceNameLength) != 0))
+#else
+      || (_strnicmp((char*)_lastUsedDeviceName, (char*)deviceUniqueIdUTF8,
+                    _lastUsedDeviceNameLength) != 0))
 #endif
 
-    {
+  {
         _apiLock.ReleaseLockShared();
         _apiLock.AcquireLockExclusive();
         if (-1 == CreateCapabilityMap(deviceUniqueIdUTF8))