Replace NULL with nullptr or null in webrtc/base/.
BUG=webrtc:7147
Review-Url: https://codereview.webrtc.org/2718663005
Cr-Commit-Position: refs/heads/master@{#16878}
diff --git a/webrtc/base/platform_thread.cc b/webrtc/base/platform_thread.cc
index 525f0dd..52f8810 100644
--- a/webrtc/base/platform_thread.cc
+++ b/webrtc/base/platform_thread.cc
@@ -149,7 +149,7 @@
// See bug 2902 for background on STACK_SIZE_PARAM_IS_A_RESERVATION.
// Set the reserved stack stack size to 1M, which is the default on Windows
// and Linux.
- thread_ = ::CreateThread(NULL, 1024 * 1024, &StartThread, this,
+ thread_ = ::CreateThread(nullptr, 1024 * 1024, &StartThread, this,
STACK_SIZE_PARAM_IS_A_RESERVATION, &thread_id_);
RTC_CHECK(thread_) << "CreateThread failed";
RTC_DCHECK(thread_id_);