Merge 10601,10602,10616,10625,10647 from the bleeding edge to the 3.8 branch.

src/profile-generator.cc

Index: src/profile-generator.cc
===================================================================
--- src/profile-generator.cc	(revision 10927)
+++ src/profile-generator.cc	(working copy)
@@ -1577,7 +1577,8 @@
 
 Handle<HeapObject> HeapSnapshotsCollection::FindHeapObjectById(uint64_t id) {
   // First perform a full GC in order to avoid dead objects.
-  HEAP->CollectAllGarbage(Heap::kMakeHeapIterableMask);
+  HEAP->CollectAllGarbage(Heap::kMakeHeapIterableMask,
+                          "HeapSnapshotsCollection::FindHeapObjectById");
   AssertNoAllocation no_allocation;
   HeapObject* object = NULL;
   HeapIterator iterator(HeapIterator::kFilterUnreachable);
@@ -3026,8 +3027,12 @@
   // full GC is reachable from the root when computing dominators.
   // This is not true for weakly reachable objects.
   // As a temporary solution we call GC twice.
-  Isolate::Current()->heap()->CollectAllGarbage(Heap::kMakeHeapIterableMask);
-  Isolate::Current()->heap()->CollectAllGarbage(Heap::kMakeHeapIterableMask);
+  Isolate::Current()->heap()->CollectAllGarbage(
+      Heap::kMakeHeapIterableMask,
+      "HeapSnapshotGenerator::GenerateSnapshot");
+  Isolate::Current()->heap()->CollectAllGarbage(
+      Heap::kMakeHeapIterableMask,
+      "HeapSnapshotGenerator::GenerateSnapshot");
 
 #ifdef DEBUG
   Heap* debug_heap = Isolate::Current()->heap();