Make FlushICache part of Assembler(Base) and take Isolate as parameter.

src/arm/codegen-arm.cc

Index: src/arm/codegen-arm.cc
diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc
index 91bfe2b37cc1b52609060aeec97dfbfd9f3a643b..97f103406113aaed83f88efa9e23f8292f4bb3e9 100644
--- a/src/arm/codegen-arm.cc
+++ b/src/arm/codegen-arm.cc
@@ -67,7 +67,7 @@ UnaryMathFunction CreateExpFunction() {
   masm.GetCode(&desc);
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 
-  CpuFeatures::FlushICache(buffer, actual_size);
+  Assembler::FlushICacheWithoutIsolate(buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
 
 #if !defined(USE_SIMULATOR)
@@ -227,7 +227,7 @@ MemCopyUint8Function CreateMemCopyUint8Function(MemCopyUint8Function stub) {
   masm.GetCode(&desc);
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 
-  CpuFeatures::FlushICache(buffer, actual_size);
+  Assembler::FlushICacheWithoutIsolate(buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
   return FUNCTION_CAST<MemCopyUint8Function>(buffer);
 #endif
@@ -314,7 +314,7 @@ MemCopyUint16Uint8Function CreateMemCopyUint16Uint8Function(
   CodeDesc desc;
   masm.GetCode(&desc);
 
-  CpuFeatures::FlushICache(buffer, actual_size);
+  Assembler::FlushICacheWithoutIsolate(buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
 
   return FUNCTION_CAST<MemCopyUint16Uint8Function>(buffer);
@@ -342,7 +342,7 @@ UnaryMathFunction CreateSqrtFunction() {
   masm.GetCode(&desc);
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 
-  CpuFeatures::FlushICache(buffer, actual_size);
+  Assembler::FlushICacheWithoutIsolate(buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
   return FUNCTION_CAST<UnaryMathFunction>(buffer);
 #endif
@@ -934,7 +934,7 @@ void Code::PatchPlatformCodeAge(Isolate* isolate,
   uint32_t young_length = isolate->code_aging_helper()->young_sequence_length();
   if (age == kNoAgeCodeAge) {
     isolate->code_aging_helper()->CopyYoungSequenceTo(sequence);
-    CpuFeatures::FlushICache(sequence, young_length);
+    Assembler::FlushICache(isolate, sequence, young_length);
   } else {
     Code* stub = GetCodeAgeStub(isolate, age, parity);
     CodePatcher patcher(sequence, young_length / Assembler::kInstrSize);