Landing for pliard@chromium.org: Remove static initializers in v8.

src/platform-macos.cc

Index: src/platform-macos.cc
===================================================================
--- src/platform-macos.cc	(revision 11005)
+++ src/platform-macos.cc	(working copy)
@@ -746,7 +746,7 @@
         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());
@@ -757,7 +757,7 @@
   }
 
   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_);
@@ -854,7 +854,7 @@
   RuntimeProfilerRateLimiter rate_limiter_;
 
   // Protects the process wide state below.
-  static Mutex* mutex_;
+  static LazyMutex mutex_;
   static SamplerThread* instance_;
 
  private:
@@ -864,7 +864,7 @@
 #undef REGISTER_FIELD
 
 
-Mutex* SamplerThread::mutex_ = OS::CreateMutex();
+LazyMutex SamplerThread::mutex_ = LAZY_MUTEX_INITIALIZER;
 SamplerThread* SamplerThread::instance_ = NULL;