Disentangle assembler from isolate.

test/cctest/test-run-wasm-relocation-x64.cc

Index: test/cctest/test-run-wasm-relocation-x64.cc
diff --git a/test/cctest/test-run-wasm-relocation-x64.cc b/test/cctest/test-run-wasm-relocation-x64.cc
index 29491e8c87a0ac5bd465ecc311213ba532371f42..fc1004073ec7eba6d8061506f64868fbc1be1af2 100644
--- a/test/cctest/test-run-wasm-relocation-x64.cc
+++ b/test/cctest/test-run-wasm-relocation-x64.cc
@@ -61,7 +61,7 @@ TEST(WasmRelocationX64MemoryReference) {
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
     DCHECK(RelocInfo::IsWasmMemoryReference(it.rinfo()->rmode()));
     it.rinfo()->update_wasm_memory_reference(
-        it.rinfo()->wasm_memory_reference(),
+        isolate, it.rinfo()->wasm_memory_reference(),
         it.rinfo()->wasm_memory_reference() + offset, SKIP_ICACHE_FLUSH);
   }
 
@@ -119,7 +119,7 @@ TEST(WasmRelocationX64WasmMemorySizeReference) {
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
     DCHECK(RelocInfo::IsWasmMemorySizeReference(it.rinfo()->rmode()));
     it.rinfo()->update_wasm_memory_size(
-        it.rinfo()->wasm_memory_size_reference(),
+        isolate, it.rinfo()->wasm_memory_size_reference(),
         it.rinfo()->wasm_memory_size_reference() + diff, SKIP_ICACHE_FLUSH);
   }