Add RTC_ prefix to (D)CHECKs and related macros.

webrtc/system_wrappers/source/thread_win.cc

Index: webrtc/system_wrappers/source/thread_win.cc
diff --git a/webrtc/system_wrappers/source/thread_win.cc b/webrtc/system_wrappers/source/thread_win.cc
index 7c6bd89547c918f56c068d06dfa3addf9cac5517..2773f7ef772f3b18db4c585c01583cef22e4a4df 100644
--- a/webrtc/system_wrappers/source/thread_win.cc
+++ b/webrtc/system_wrappers/source/thread_win.cc
@@ -32,12 +32,12 @@ ThreadWindows::ThreadWindows(ThreadRunFunction func, void* obj,
       stop_(false),
       thread_(NULL),
       name_(thread_name ? thread_name : "webrtc") {
-  DCHECK(func);
+  RTC_DCHECK(func);
 }
 
 ThreadWindows::~ThreadWindows() {
-  DCHECK(main_thread_.CalledOnValidThread());
-  DCHECK(!thread_);
+  RTC_DCHECK(main_thread_.CalledOnValidThread());
+  RTC_DCHECK(!thread_);
 }
 
 // static
@@ -52,8 +52,8 @@ DWORD WINAPI ThreadWindows::StartThread(void* param) {
 }
 
 bool ThreadWindows::Start() {
-  DCHECK(main_thread_.CalledOnValidThread());
-  DCHECK(!thread_);
+  RTC_DCHECK(main_thread_.CalledOnValidThread());
+  RTC_DCHECK(!thread_);
 
   stop_ = false;
 
@@ -64,7 +64,7 @@ bool ThreadWindows::Start() {
   thread_ = ::CreateThread(NULL, 1024 * 1024, &StartThread, this,
       STACK_SIZE_PARAM_IS_A_RESERVATION, &thread_id);
   if (!thread_ ) {
-    DCHECK(false) << "CreateThread failed";
+    RTC_DCHECK(false) << "CreateThread failed";
     return false;
   }
 
@@ -72,7 +72,7 @@ bool ThreadWindows::Start() {
 }
 
 bool ThreadWindows::Stop() {
-  DCHECK(main_thread_.CalledOnValidThread());
+  RTC_DCHECK(main_thread_.CalledOnValidThread());
   if (thread_) {
     // Set stop_ to |true| on the worker thread.
     QueueUserAPC(&RaiseFlag, thread_, reinterpret_cast<ULONG_PTR>(&stop_));
@@ -85,7 +85,7 @@ bool ThreadWindows::Stop() {
 }
 
 bool ThreadWindows::SetPriority(ThreadPriority priority) {
-  DCHECK(main_thread_.CalledOnValidThread());
+  RTC_DCHECK(main_thread_.CalledOnValidThread());
   return thread_ && SetThreadPriority(thread_, priority);
 }