[wasm] Refactor GrowMemory runtime call.

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index ce936e2da69e565564d2c7bbb1691907974eb5c5..6dae240f0c45d2e8b56376e5f7f87a7ac8677221 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -516,6 +516,9 @@ MaybeHandle<JSArrayBuffer> GetInstanceMemory(Isolate* isolate,
                                              Handle<JSObject> instance);
 void SetInstanceMemory(Handle<JSObject> instance, JSArrayBuffer* buffer);

[Mircea Trofin, 2016/10/04 22:01:53]

We can delete SetInstanceMemory, I think. It was there just for 
GrowMemory.

[gdeepti, 2016/10/05 02:59:57]

Removed from header, retaining in wasm-module.cc for modularity.

 
+int32_t GrowInstanceMemory(Isolate* isolate, Handle<JSObject> instance,
+                           uint32_t pages);
+
 namespace testing {
 
 void ValidateInstancesChain(Isolate* isolate, Handle<JSObject> module_obj,