[cleanup] Remove dead InitializeDescriptor method

R=ishell@chromium.org

Bug: v8:7754
Change-Id: I122139207ef5be4d7cc9f2a7cbe2a89ea337f77f
Reviewed-on: https://chromium-review.googlesource.com/1101324Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53758}

src/code-stubs.cc

@@ -36,9 +36,7 @@ CodeStubDescriptor::CodeStubDescriptor(CodeStub* stub)
       function_mode_(NOT_JS_FUNCTION_STUB_MODE),
       deoptimization_handler_(kNullAddress),
       miss_handler_(),
-      has_miss_handler_(false) {
-  stub->InitializeDescriptor(this);
-}
+      has_miss_handler_(false) {}
 
 CodeStubDescriptor::CodeStubDescriptor(Isolate* isolate, uint32_t stub_key)
     : isolate_(isolate),
@@ -231,7 +229,6 @@ static void InitializeDescriptorDispatchedCall(CodeStub* stub,
                                                void** value_out) {
   CodeStubDescriptor* descriptor_out =
       reinterpret_cast<CodeStubDescriptor*>(value_out);
-  stub->InitializeDescriptor(descriptor_out);
   descriptor_out->set_call_descriptor(stub->GetCallInterfaceDescriptor());
 }
 

src/code-stubs.h

@@ -135,8 +135,6 @@ class CodeStub : public ZoneObject {
     return GetCallInterfaceDescriptor().GetStackParameterCount();
   }
 
-  virtual void InitializeDescriptor(CodeStubDescriptor* descriptor) {}
-
   static void InitializeDescriptor(Isolate* isolate, uint32_t key,
                                    CodeStubDescriptor* desc);