Oilpan: Fix Heap::isConsistentForGC which only checks the heap for one...

Oilpan: Fix Heap::isConsistentForGC which only checks the heap for one attached thread at this point.

Thanks for noticing this Peter. :)

R=oilpan-reviews@chromium.org, pkasting@chromium.org, zerny@chromium.org
BUG=

Review URL: https://codereview.chromium.org/206113002

git-svn-id: svn://svn.chromium.org/blink/trunk@169635 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/heap/Heap.cpp

@@ -1356,8 +1356,10 @@ bool Heap::isConsistentForGC()
 {
     ASSERT(ThreadState::isAnyThreadInGC());
     ThreadState::AttachedThreadStateSet& threads = ThreadState::attachedThreads();
-    for (ThreadState::AttachedThreadStateSet::iterator it = threads.begin(), end = threads.end(); it != end; ++it)
-        return (*it)->isConsistentForGC();
+    for (ThreadState::AttachedThreadStateSet::iterator it = threads.begin(), end = threads.end(); it != end; ++it) {
+        if (!(*it)->isConsistentForGC())
+            return false;
+    }
     return true;
 }