Remove the dependency of Zone on Isolate

test/cctest/test-unique.cc

Index: test/cctest/test-unique.cc
diff --git a/test/cctest/test-unique.cc b/test/cctest/test-unique.cc
index 302539a96d02d8c85d4275ea5af335acffd45e95..15b800dc052d316c4376517927d04c3063450056 100644
--- a/test/cctest/test-unique.cc
+++ b/test/cctest/test-unique.cc
@@ -143,7 +143,7 @@ TEST(UniqueSet_Add) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set = new(&zone) UniqueSet<String>();
 
@@ -170,7 +170,7 @@ TEST(UniqueSet_Remove) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set = new(&zone) UniqueSet<String>();
 
@@ -210,7 +210,7 @@ TEST(UniqueSet_Contains) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set = new(&zone) UniqueSet<String>();
 
@@ -241,7 +241,7 @@ TEST(UniqueSet_At) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set = new(&zone) UniqueSet<String>();
 
@@ -278,7 +278,7 @@ TEST(UniqueSet_Equals) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set1 = new(&zone) UniqueSet<String>();
   UniqueSet<String>* set2 = new(&zone) UniqueSet<String>();
@@ -316,7 +316,7 @@ TEST(UniqueSet_IsSubset1) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set1 = new(&zone) UniqueSet<String>();
   UniqueSet<String>* set2 = new(&zone) UniqueSet<String>();
@@ -351,7 +351,7 @@ TEST(UniqueSet_IsSubset2) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C_D_E_F_G;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set1 = new(&zone) UniqueSet<String>();
   UniqueSet<String>* set2 = new(&zone) UniqueSet<String>();
@@ -394,7 +394,7 @@ TEST(UniqueSet_IsSubsetExhaustive) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C_D_E_F_G;
 
-  Zone zone(isolate);
+  Zone zone;
 
   Unique<String> elements[] = {
     A, B, C, D, E, F, G
@@ -417,7 +417,7 @@ TEST(UniqueSet_Intersect1) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set1 = new(&zone) UniqueSet<String>();
   UniqueSet<String>* set2 = new(&zone) UniqueSet<String>();
@@ -458,7 +458,7 @@ TEST(UniqueSet_IntersectExhaustive) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C_D_E_F_G;
 
-  Zone zone(isolate);
+  Zone zone;
 
   Unique<String> elements[] = {
     A, B, C, D, E, F, G
@@ -485,7 +485,7 @@ TEST(UniqueSet_Union1) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C;
 
-  Zone zone(isolate);
+  Zone zone;
 
   UniqueSet<String>* set1 = new(&zone) UniqueSet<String>();
   UniqueSet<String>* set2 = new(&zone) UniqueSet<String>();
@@ -526,7 +526,7 @@ TEST(UniqueSet_UnionExhaustive) {
   MAKE_HANDLES_AND_DISALLOW_ALLOCATION;
   MAKE_UNIQUES_A_B_C_D_E_F_G;
 
-  Zone zone(isolate);
+  Zone zone;
 
   Unique<String> elements[] = {
     A, B, C, D, E, F, G