[turbofan] Add support for transitioning stores to double fields.

src/interface-descriptors.cc

Index: src/interface-descriptors.cc
diff --git a/src/interface-descriptors.cc b/src/interface-descriptors.cc
index c81ea8b7d23d2672eb6297fdef38fcc021b55e06..1af3cec41825fdbf9ec5c1f093cc0928f10a6ff3 100644
--- a/src/interface-descriptors.cc
+++ b/src/interface-descriptors.cc
@@ -75,6 +75,12 @@ const char* CallInterfaceDescriptor::DebugName(Isolate* isolate) const {
 }
 
 
+void AllocateMutableHeapNumberDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  data->InitializePlatformSpecific(0, nullptr, nullptr);
+}
+
+
 Type::FunctionType* LoadDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();