Remove static initializers in v8.

src/platform-macos.cc

Index: src/platform-macos.cc
diff --git a/src/platform-macos.cc b/src/platform-macos.cc
index e367d21a41cd9de7ac6460e572ba50ae1ab494c4..c7b1f12f9923107df1f36ff99b7d2b2908aae4ef 100644
--- a/src/platform-macos.cc
+++ b/src/platform-macos.cc
@@ -740,7 +740,7 @@ class SamplerThread : public Thread {
         interval_(interval) {}
 
   static void AddActiveSampler(Sampler* sampler) {
-    ScopedLock lock(mutex_);
+    ScopedLock lock(mutex_.Pointer());
     SamplerRegistry::AddActiveSampler(sampler);
     if (instance_ == NULL) {
       instance_ = new SamplerThread(sampler->interval());
@@ -751,7 +751,7 @@ class SamplerThread : public Thread {
   }
 
   static void RemoveActiveSampler(Sampler* sampler) {
-    ScopedLock lock(mutex_);
+    ScopedLock lock(mutex_.Pointer());
     SamplerRegistry::RemoveActiveSampler(sampler);
     if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) {
       RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_);
@@ -848,7 +848,7 @@ class SamplerThread : public Thread {
   RuntimeProfilerRateLimiter rate_limiter_;
 
   // Protects the process wide state below.
-  static Mutex* mutex_;
+  static LazyMutex mutex_;
   static SamplerThread* instance_;
 
  private:
@@ -858,7 +858,7 @@ class SamplerThread : public Thread {
 #undef REGISTER_FIELD
 
 
-Mutex* SamplerThread::mutex_ = OS::CreateMutex();
+LazyMutex SamplerThread::mutex_ = LAZY_MUTEX_INITIALIZER;
 SamplerThread* SamplerThread::instance_ = NULL;