Update V8 to r7427: Initial merge by git

As required by WebKit r82507

Change-Id: I7ae83ef3f689356043b4929255b7c1dd31d8c5df
diff --git a/src/data-flow.h b/src/data-flow.h
index 79d760f..573d7d8 100644
--- a/src/data-flow.h
+++ b/src/data-flow.h
@@ -90,7 +90,7 @@
   explicit BitVector(int length)
       : length_(length),
         data_length_(SizeFor(length)),
-        data_(Zone::NewArray<uint32_t>(data_length_)) {
+        data_(ZONE->NewArray<uint32_t>(data_length_)) {
     ASSERT(length > 0);
     Clear();
   }
@@ -98,7 +98,7 @@
   BitVector(const BitVector& other)
       : length_(other.length()),
         data_length_(SizeFor(length_)),
-        data_(Zone::NewArray<uint32_t>(data_length_)) {
+        data_(ZONE->NewArray<uint32_t>(data_length_)) {
     CopyFrom(other);
   }
 
@@ -237,7 +237,7 @@
 
   explicit SparseSet(int universe_size)
       : dense_(4),
-        sparse_(Zone::NewArray<int>(universe_size)) {
+        sparse_(ZONE->NewArray<int>(universe_size)) {
 #ifdef DEBUG
     size_ = universe_size;
     iterator_count_ = 0;