Always pass an Isolate to AssemblerBase

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index f38e1ff514087cad7b65b20ea08fe40acf5383db..2729ca52d53135e1bcb2c83a0d4a745b81786837 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -5257,10 +5257,10 @@ bool AreAliased(Register reg1,
 #endif
 
 
-CodePatcher::CodePatcher(byte* address, int size)
+CodePatcher::CodePatcher(Isolate* isolate, byte* address, int size)
     : address_(address),
       size_(size),
-      masm_(NULL, address, size + Assembler::kGap, CodeObjectRequired::kNo) {
+      masm_(isolate, address, size + Assembler::kGap, CodeObjectRequired::kNo) {
   // Create a new macro assembler pointing to the address of the code to patch.
   // The size is adjusted with kGap on order for the assembler to generate size
   // bytes of instructions without failing with buffer size constraints.
@@ -5270,7 +5270,7 @@ CodePatcher::CodePatcher(byte* address, int size)
 
 CodePatcher::~CodePatcher() {
   // Indicate that code has changed.
-  Assembler::FlushICacheWithoutIsolate(address_, size_);
+  Assembler::FlushICache(masm_.isolate(), address_, size_);
 
   // Check that the code was patched as expected.
   DCHECK(masm_.pc_ == address_ + size_);