[iwyu] Fix raw-machine-assembler.h

Fix by removing a method with a single user instead of introducing an
inl-header.

R=mstarzinger@chromium.org

Bug: v8:7965
Change-Id: I596a673f36c63197db3e774d24b65abe01e83399
Reviewed-on: https://chromium-review.googlesource.com/c/1303717
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57071}

src/compiler/code-assembler.cc

@@ -296,7 +296,9 @@ TNode<String> CodeAssembler::StringConstant(const char* str) {
 }
 
 TNode<Oddball> CodeAssembler::BooleanConstant(bool value) {
-  return UncheckedCast<Oddball>(raw_assembler()->BooleanConstant(value));
+  Handle<Object> object = isolate()->factory()->ToBoolean(value);
+  return UncheckedCast<Oddball>(
+      raw_assembler()->HeapConstant(Handle<HeapObject>::cast(object)));
 }
 
 TNode<ExternalReference> CodeAssembler::ExternalConstant(

src/compiler/raw-machine-assembler.h

@@ -100,10 +100,6 @@ class V8_EXPORT_PRIVATE RawMachineAssembler {
   Node* HeapConstant(Handle<HeapObject> object) {
     return AddNode(common()->HeapConstant(object));
   }
-  Node* BooleanConstant(bool value) {
-    Handle<Object> object = isolate()->factory()->ToBoolean(value);
-    return HeapConstant(Handle<HeapObject>::cast(object));
-  }
   Node* ExternalConstant(ExternalReference address) {
     return AddNode(common()->ExternalConstant(address));
   }

tools/generate-header-include-checks.py

@@ -30,7 +30,6 @@ AUTO_EXCLUDE = [
   'src/flag-definitions.h',
   # blacklist of headers we need to fix (https://crbug.com/v8/7965).
   'src/compiler/js-context-specialization.h',
-  'src/compiler/raw-machine-assembler.h',
   'src/regexp/jsregexp.h',
   'src/snapshot/object-deserializer.h',
   'src/transitions.h',