Revert "Reland 22105 "Remove static initializer from isolate""

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 4ca116866166bc0560388bc0c2eca1696703a1b9..972a518b6e62c630fc6f907a9d8cb3965235d234 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -448,14 +448,12 @@ class Isolate {
   // Returns the PerIsolateThreadData for the current thread (or NULL if one is
   // not currently set).
   static PerIsolateThreadData* CurrentPerIsolateThreadData() {
-    EnsureInitialized();
     return reinterpret_cast<PerIsolateThreadData*>(
         base::Thread::GetThreadLocal(per_isolate_thread_data_key_));
   }
 
   // Returns the isolate inside which the current thread is running.
   INLINE(static Isolate* Current()) {
-    EnsureInitialized();
     Isolate* isolate = reinterpret_cast<Isolate*>(
         base::Thread::GetExistingThreadLocal(isolate_key_));
     ASSERT(isolate != NULL);
@@ -463,7 +461,6 @@ class Isolate {
   }
 
   INLINE(static Isolate* UncheckedCurrent()) {
-    EnsureInitialized();
     return reinterpret_cast<Isolate*>(
         base::Thread::GetThreadLocal(isolate_key_));
   }
@@ -489,6 +486,13 @@ class Isolate {
 
   static void GlobalTearDown();
 
+  static void SetCrashIfDefaultIsolateInitialized();
+  // Ensures that process-wide resources and the default isolate have been
+  // allocated. It is only necessary to call this method in rare cases, for
+  // example if you are using V8 from within the body of a static initializer.
+  // Safe to call multiple times.
+  static void EnsureDefaultIsolate();
+
   // Find the PerThread for this particular (isolate, thread) combination
   // If one does not yet exist, return null.
   PerIsolateThreadData* FindPerThreadDataForThisThread();
@@ -501,13 +505,11 @@ class Isolate {
   // Used internally for V8 threads that do not execute JavaScript but still
   // are part of the domain of an isolate (like the context switcher).
   static base::Thread::LocalStorageKey isolate_key() {
-    EnsureInitialized();
     return isolate_key_;
   }
 
   // Returns the key used to store process-wide thread IDs.
   static base::Thread::LocalStorageKey thread_id_key() {
-    EnsureInitialized();
     return thread_id_key_;
   }
 
@@ -1088,8 +1090,6 @@ class Isolate {
   void CountUsage(v8::Isolate::UseCounterFeature feature);
 
  private:
-  static void EnsureInitialized();
-
   Isolate();
 
   friend struct GlobalState;
@@ -1149,7 +1149,7 @@ class Isolate {
   };
 
   // This mutex protects highest_thread_id_ and thread_data_table_.
-  static base::LazyMutex process_wide_mutex_;
+  static base::Mutex process_wide_mutex_;
 
   static base::Thread::LocalStorageKey per_isolate_thread_data_key_;
   static base::Thread::LocalStorageKey isolate_key_;