reflow comments in platform/heap

third_party/WebKit/Source/platform/heap/PersistentNode.h

Index: third_party/WebKit/Source/platform/heap/PersistentNode.h
diff --git a/third_party/WebKit/Source/platform/heap/PersistentNode.h b/third_party/WebKit/Source/platform/heap/PersistentNode.h
index ff37d5d743378bf64e7c0f8820cea7475f87b727..0e518a39e295041b229de7028b427acaa2c6ea22 100644
--- a/third_party/WebKit/Source/platform/heap/PersistentNode.h
+++ b/third_party/WebKit/Source/platform/heap/PersistentNode.h
@@ -180,13 +180,16 @@ class CrossThreadPersistentRegion final {
 
   void freePersistentNode(PersistentNode*& persistentNode) {
     MutexLocker lock(m_mutex);
-    // When the thread that holds the heap object that the cross-thread persistent shuts down,
-    // prepareForThreadStateTermination() will clear out the associated CrossThreadPersistent<>
-    // and PersistentNode so as to avoid unsafe access. This can overlap with a holder of
-    // the CrossThreadPersistent<> also clearing the persistent and freeing the PersistentNode.
+    // When the thread that holds the heap object that the cross-thread
+    // persistent shuts down, prepareForThreadStateTermination() will clear out
+    // the associated CrossThreadPersistent<> and PersistentNode so as to avoid
+    // unsafe access. This can overlap with a holder of the
+    // CrossThreadPersistent<> also clearing the persistent and freeing the
+    // PersistentNode.
     //
-    // The lock ensures the updating is ordered, but by the time lock has been acquired the
-    // PersistentNode reference may have been cleared out already; check for this.
+    // The lock ensures the updating is ordered, but by the time lock has been
+    // acquired the PersistentNode reference may have been cleared out already;
+    // check for this.
     if (!persistentNode)
       return;
     m_persistentRegion->freePersistentNode(persistentNode);