Make MemoryCoordinator garbage collected

third_party/WebKit/Source/platform/MemoryCoordinator.cpp

Index: third_party/WebKit/Source/platform/MemoryCoordinator.cpp
diff --git a/third_party/WebKit/Source/platform/MemoryCoordinator.cpp b/third_party/WebKit/Source/platform/MemoryCoordinator.cpp
index 96fa073243f44e8c6af25ce2f388a258c1fd6eae..65b3b0dc21698e8a9e0902fcbdcd0c5334389fea 100644
--- a/third_party/WebKit/Source/platform/MemoryCoordinator.cpp
+++ b/third_party/WebKit/Source/platform/MemoryCoordinator.cpp
@@ -18,18 +18,16 @@ DEFINE_TRACE(MemoryCoordinatorClient)
 
 MemoryCoordinator& MemoryCoordinator::instance()
 {
-    DEFINE_STATIC_LOCAL(MemoryCoordinator, instance, ());
-    return instance;
+    static Persistent<MemoryCoordinator>* instance;
+    if (!instance)
+        instance = new Persistent<MemoryCoordinator>(new MemoryCoordinator);

[keishi, 2016/08/16 08:41:34]

This may be shorter
DEFINE_STATIC_LOCAL(Persistent<MemoryCoordinator>, external, (new
MemoryCoordinator));

+    return *instance->get();
 }
 
 MemoryCoordinator::MemoryCoordinator()
 {
 }
 
-MemoryCoordinator::~MemoryCoordinator()
-{
-}
-
 void MemoryCoordinator::registerClient(MemoryCoordinatorClient* client)
 {
     DCHECK(isMainThread());