Add RTC_ prefix to contructormagic macros.

webrtc/base/thread_checker_unittest.cc

Index: webrtc/base/thread_checker_unittest.cc
diff --git a/webrtc/base/thread_checker_unittest.cc b/webrtc/base/thread_checker_unittest.cc
index 3c496314fa2d86442bb3469f08c67168f01dbfb8..a193248eb7a8e053131ea5439719cdd6a4bdcfe7 100644
--- a/webrtc/base/thread_checker_unittest.cc
+++ b/webrtc/base/thread_checker_unittest.cc
@@ -49,7 +49,7 @@ class ThreadCheckerClass : public ThreadChecker {
   static void DetachThenCallFromDifferentThreadImpl();
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(ThreadCheckerClass);
+  RTC_DISALLOW_COPY_AND_ASSIGN(ThreadCheckerClass);
 };
 
 // Calls ThreadCheckerClass::DoStuff on another thread.
@@ -72,7 +72,7 @@ class CallDoStuffOnThread : public Thread {
  private:
   ThreadCheckerClass* thread_checker_class_;
 
-  DISALLOW_COPY_AND_ASSIGN(CallDoStuffOnThread);
+  RTC_DISALLOW_COPY_AND_ASSIGN(CallDoStuffOnThread);
 };
 
 // Deletes ThreadCheckerClass on a different thread.
@@ -96,7 +96,7 @@ class DeleteThreadCheckerClassOnThread : public Thread {
  private:
   scoped_ptr<ThreadCheckerClass> thread_checker_class_;
 
-  DISALLOW_COPY_AND_ASSIGN(DeleteThreadCheckerClassOnThread);
+  RTC_DISALLOW_COPY_AND_ASSIGN(DeleteThreadCheckerClassOnThread);
 };
 
 }  // namespace