Always pass an Isolate to AssemblerBase

src/arm64/codegen-arm64.cc

Index: src/arm64/codegen-arm64.cc
diff --git a/src/arm64/codegen-arm64.cc b/src/arm64/codegen-arm64.cc
index ea19584c1dcc37f0903f7786241cf70453a4c165..c2073f1f4b6b41a893a0ce56e7c9aea25de94bc5 100644
--- a/src/arm64/codegen-arm64.cc
+++ b/src/arm64/codegen-arm64.cc
@@ -373,7 +373,7 @@ CodeAgingHelper::CodeAgingHelper(Isolate* isolate) {
   // The sequence of instructions that is patched out for aging code is the
   // following boilerplate stack-building prologue that is found both in
   // FUNCTION and OPTIMIZED_FUNCTION code:
-  PatchingAssembler patcher(young_sequence_.start(),
+  PatchingAssembler patcher(isolate, young_sequence_.start(),
                             young_sequence_.length() / kInstructionSize);
   // The young sequence is the frame setup code for FUNCTION code types. It is
   // generated by FullCodeGenerator::Generate.
@@ -382,7 +382,7 @@ CodeAgingHelper::CodeAgingHelper(Isolate* isolate) {
 #ifdef DEBUG
   const int length = kCodeAgeStubEntryOffset / kInstructionSize;
   DCHECK(old_sequence_.length() >= kCodeAgeStubEntryOffset);
-  PatchingAssembler patcher_old(old_sequence_.start(), length);
+  PatchingAssembler patcher_old(isolate, old_sequence_.start(), length);
   MacroAssembler::EmitCodeAgeSequence(&patcher_old, NULL);
 #endif
 }
@@ -417,7 +417,7 @@ void Code::PatchPlatformCodeAge(Isolate* isolate,
                                 byte* sequence,
                                 Code::Age age,
                                 MarkingParity parity) {
-  PatchingAssembler patcher(sequence,
+  PatchingAssembler patcher(isolate, sequence,
                             kNoCodeAgeSequenceLength / kInstructionSize);
   if (age == kNoAgeCodeAge) {
     MacroAssembler::EmitFrameSetupForCodeAgePatching(&patcher);