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

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index c0b9773ad8e895d1f51f4c480e5fb5b341d5540d..2d8b2984ca4d2ebe46eaf3151fdc360767b05650 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -3747,7 +3747,7 @@ CodePatcher::CodePatcher(byte* address,
 CodePatcher::~CodePatcher() {
   // Indicate that code has changed.
   if (flush_cache_ == FLUSH) {
-    CpuFeatures::FlushICache(address_, size_);
+    Assembler::FlushICacheWithoutIsolate(address_, size_);
   }
 
   // Check that the code was patched as expected.