[refactor] Separate generated builtins and C++ builtins into separate files

src/builtins/builtins-regexp-gen.h

Index: src/builtins/builtins-regexp-gen.h
diff --git a/src/builtins/builtins-regexp.h b/src/builtins/builtins-regexp-gen.h
similarity index 95%
rename from src/builtins/builtins-regexp.h
rename to src/builtins/builtins-regexp-gen.h
index 3fde4e64752eebd11366cb180aa8750627f529ce..63462b9d58e973d58ea7baa8f59a675ea0d1728a 100644
--- a/src/builtins/builtins-regexp.h
+++ b/src/builtins/builtins-regexp-gen.h
@@ -10,13 +10,9 @@
 namespace v8 {
 namespace internal {
 
-typedef compiler::Node Node;
-typedef compiler::CodeAssemblerState CodeAssemblerState;
-typedef compiler::CodeAssemblerLabel CodeAssemblerLabel;
-
 class RegExpBuiltinsAssembler : public CodeStubAssembler {
  public:
-  explicit RegExpBuiltinsAssembler(CodeAssemblerState* state)
+  explicit RegExpBuiltinsAssembler(compiler::CodeAssemblerState* state)
       : CodeStubAssembler(state) {}
 
   void BranchIfFastRegExp(Node* const context, Node* const map,