cc: Add tile pool to tile manager.

cc/base/ref_counted_managed.h

Index: cc/base/ref_counted_managed.h
diff --git a/cc/base/ref_counted_managed.h b/cc/base/ref_counted_managed.h
index 8bb836f015957ceecac9ee7d0e04193bb0ee3e91..02ad6ee95fea99f2fffe1b96e734839b37344cc4 100644
--- a/cc/base/ref_counted_managed.h
+++ b/cc/base/ref_counted_managed.h
@@ -32,11 +32,16 @@ template <typename T>
 class CC_EXPORT RefCountedManaged : public base::subtle::RefCountedBase {
  public:
   explicit RefCountedManaged(RefCountedManager<T>* manager)
-      : manager_(manager) {
-    manager_->live_object_count_++;
+      : manager_(manager),
+        released_(true) {
   }
 
   void AddRef() const {
+    if (released_) {
+      released_ = false;
+      ClearInDtor();
+      manager_->live_object_count_++;
+    }
     base::subtle::RefCountedBase::AddRef();
   }
 
@@ -45,6 +50,8 @@ class CC_EXPORT RefCountedManaged : public base::subtle::RefCountedBase {
       DCHECK_GT(manager_->live_object_count_, 0);
       manager_->live_object_count_--;
 
+      released_ = true;
+
       // This must be the last statement in case manager deletes
       // the object immediately.
       manager_->Release(static_cast<T*>(this));
@@ -56,6 +63,7 @@ class CC_EXPORT RefCountedManaged : public base::subtle::RefCountedBase {
 
  private:
   RefCountedManager<T>* manager_;
+  mutable bool released_;
 
   DISALLOW_COPY_AND_ASSIGN(RefCountedManaged<T>);
 };