Attach snapshot data blob to the isolate.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index ae3c1d365c4a3368d0f3ebdfafba323f342c7171..c2ee746a43d10065e025b7fc780faa7f634c6b5a 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -5073,7 +5073,7 @@ TEST(Regress442710) {
 
 
 TEST(NumberStringCacheSize) {
-  if (!Snapshot::HaveASnapshotToStartFrom()) return;
+  if (!Snapshot::HaveASnapshotToStartFrom(CcTest::i_isolate())) return;
   // Test that the number-string cache has not been resized in the snapshot.
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
@@ -5099,14 +5099,15 @@ TEST(FirstPageFitsStartup) {
   // Test that the first page sizes provided by the default snapshot are large
   // enough to fit everything right after startup and creating one context.
   // If this test fails, we are allocating too much aside from deserialization.
-  if (!Snapshot::HaveASnapshotToStartFrom()) return;
-  if (Snapshot::EmbedsScript()) return;
+  if (!Snapshot::HaveASnapshotToStartFrom(CcTest::i_isolate())) return;
+  if (Snapshot::EmbedsScript(CcTest::i_isolate())) return;
   CcTest::InitializeVM();
   LocalContext env;
   PagedSpaces spaces(CcTest::heap());
   for (PagedSpace* s = spaces.next(); s != NULL; s = spaces.next()) {
     uint32_t default_size = s->AreaSize();
-    uint32_t reduced_size = Snapshot::SizeOfFirstPage(s->identity());
+    uint32_t reduced_size =
+        Snapshot::SizeOfFirstPage(CcTest::i_isolate(), s->identity());
     if (reduced_size == default_size) continue;
     int counter = 0;
     Page* page = NULL;