Remove the dependency of Zone on Isolate

src/regexp-macro-assembler-tracer.cc

Index: src/regexp-macro-assembler-tracer.cc
diff --git a/src/regexp-macro-assembler-tracer.cc b/src/regexp-macro-assembler-tracer.cc
index 14da2da895b814977fbb7a2da209a23bb594cf56..71d0b9b0f7ec5a767d654b2a00df1cf81f32f1b1 100644
--- a/src/regexp-macro-assembler-tracer.cc
+++ b/src/regexp-macro-assembler-tracer.cc
@@ -12,9 +12,8 @@ namespace v8 {
 namespace internal {
 
 RegExpMacroAssemblerTracer::RegExpMacroAssemblerTracer(
-    RegExpMacroAssembler* assembler) :
-  RegExpMacroAssembler(assembler->zone()),
-  assembler_(assembler) {
+    Isolate* isolate, RegExpMacroAssembler* assembler)
+    : RegExpMacroAssembler(isolate, assembler->zone()), assembler_(assembler) {
   unsigned int type = assembler->Implementation();
   DCHECK(type < 6);
   const char* impl_names[] = {"IA32", "ARM", "ARM64",