Index: include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
===================================================================
--- include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
+++ include/llvm/DebugInfo/PDB/Raw/DbiStreamBuilder.h
@@ -60,7 +60,6 @@
 
   Error finalizeMsfLayout();
 
-  Expected<std::unique_ptr<DbiStream>> build(PDBFile &File);
   Error commit(const msf::MSFLayout &Layout,
                const msf::WritableStream &Buffer);
 
Index: include/llvm/DebugInfo/PDB/Raw/InfoStreamBuilder.h
===================================================================
--- include/llvm/DebugInfo/PDB/Raw/InfoStreamBuilder.h
+++ include/llvm/DebugInfo/PDB/Raw/InfoStreamBuilder.h
@@ -43,8 +43,6 @@
 
   Error finalizeMsfLayout();
 
-  Expected<std::unique_ptr<InfoStream>> build(PDBFile &File);
-
   Error commit(const msf::MSFLayout &Layout,
                const msf::WritableStream &Buffer) const;
 
Index: include/llvm/DebugInfo/PDB/Raw/PDBFileBuilder.h
===================================================================
--- include/llvm/DebugInfo/PDB/Raw/PDBFileBuilder.h
+++ include/llvm/DebugInfo/PDB/Raw/PDBFileBuilder.h
@@ -45,9 +45,6 @@
   TpiStreamBuilder &getTpiBuilder();
   TpiStreamBuilder &getIpiBuilder();
 
-  Expected<std::unique_ptr<PDBFile>>
-  build(std::unique_ptr<msf::WritableStream> PdbFileBuffer);
-
   Error commit(StringRef Filename);
 
 private:
Index: include/llvm/DebugInfo/PDB/Raw/TpiStreamBuilder.h
===================================================================
--- include/llvm/DebugInfo/PDB/Raw/TpiStreamBuilder.h
+++ include/llvm/DebugInfo/PDB/Raw/TpiStreamBuilder.h
@@ -56,8 +56,6 @@
 
   Error finalizeMsfLayout();
 
-  Expected<std::unique_ptr<TpiStream>> build(PDBFile &File);
-
   Error commit(const msf::MSFLayout &Layout, const msf::WritableStream &Buffer);
 
   uint32_t calculateSerializedLength() const;
Index: lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
===================================================================
--- lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
+++ lib/DebugInfo/PDB/Raw/DbiStreamBuilder.cpp
@@ -357,27 +357,6 @@
   return Ret;
 }
 
-Expected<std::unique_ptr<DbiStream>>
-DbiStreamBuilder::build(PDBFile &File) {
-  if (!VerHeader.hasValue())
-    return make_error<RawError>(raw_error_code::unspecified,
-                                "Missing DBI Stream Version");
-  if (auto EC = finalize())
-    return std::move(EC);
-
-  auto StreamData = MappedBlockStream::createIndexedStream(
-      File.getMsfLayout(), File.getMsfBuffer(), StreamDBI);
-  auto Dbi = llvm::make_unique<DbiStream>(File, std::move(StreamData));
-  Dbi->Header = Header;
-  Dbi->FileInfoSubstream = ReadableStreamRef(FileInfoBuffer);
-  Dbi->ModInfoSubstream = ReadableStreamRef(ModInfoBuffer);
-  if (auto EC = Dbi->initializeModInfoArray())
-    return std::move(EC);
-  if (auto EC = Dbi->initializeFileInfo())
-    return std::move(EC);
-  return std::move(Dbi);
-}
-
 Error DbiStreamBuilder::commit(const msf::MSFLayout &Layout,
                                const msf::WritableStream &Buffer) {
   if (auto EC = finalize())
Index: lib/DebugInfo/PDB/Raw/InfoStreamBuilder.cpp
===================================================================
--- lib/DebugInfo/PDB/Raw/InfoStreamBuilder.cpp
+++ lib/DebugInfo/PDB/Raw/InfoStreamBuilder.cpp
@@ -47,22 +47,6 @@
   return Error::success();
 }
 
-Expected<std::unique_ptr<InfoStream>>
-InfoStreamBuilder::build(PDBFile &File) {
-  auto StreamData = MappedBlockStream::createIndexedStream(
-      File.getMsfLayout(), File.getMsfBuffer(), StreamPDB);
-  auto Info = llvm::make_unique<InfoStream>(std::move(StreamData));
-  Info->Version = Ver;
-  Info->Signature = Sig;
-  Info->Age = Age;
-  Info->Guid = Guid;
-  auto NS = NamedStreams.build();
-  if (!NS)
-    return NS.takeError();
-  Info->NamedStreams = **NS;
-  return std::move(Info);
-}
-
 Error InfoStreamBuilder::commit(const msf::MSFLayout &Layout,
                                 const msf::WritableStream &Buffer) const {
   auto InfoS =
Index: lib/DebugInfo/PDB/Raw/PDBFileBuilder.cpp
===================================================================
--- lib/DebugInfo/PDB/Raw/PDBFileBuilder.cpp
+++ lib/DebugInfo/PDB/Raw/PDBFileBuilder.cpp
@@ -87,51 +87,6 @@
   return Msf->build();
 }
 
-Expected<std::unique_ptr<PDBFile>>
-PDBFileBuilder::build(std::unique_ptr<msf::WritableStream> PdbFileBuffer) {
-  auto ExpectedLayout = finalizeMsfLayout();
-  if (!ExpectedLayout)
-    return ExpectedLayout.takeError();
-
-  auto File = llvm::make_unique<PDBFile>(std::move(PdbFileBuffer), Allocator);
-  File->ContainerLayout = *ExpectedLayout;
-
-  if (Info) {
-    auto ExpectedInfo = Info->build(*File);
-    if (!ExpectedInfo)
-      return ExpectedInfo.takeError();
-    File->Info = std::move(*ExpectedInfo);
-  }
-
-  if (Dbi) {
-    auto ExpectedDbi = Dbi->build(*File);
-    if (!ExpectedDbi)
-      return ExpectedDbi.takeError();
-    File->Dbi = std::move(*ExpectedDbi);
-  }
-
-  if (Tpi) {
-    auto ExpectedTpi = Tpi->build(*File);
-    if (!ExpectedTpi)
-      return ExpectedTpi.takeError();
-    File->Tpi = std::move(*ExpectedTpi);
-  }
-
-  if (Ipi) {
-    auto ExpectedIpi = Ipi->build(*File);
-    if (!ExpectedIpi)
-      return ExpectedIpi.takeError();
-    File->Ipi = std::move(*ExpectedIpi);
-  }
-
-  if (File->Info && File->Dbi && File->Info->getAge() != File->Dbi->getAge())
-    return llvm::make_error<RawError>(
-        raw_error_code::corrupt_file,
-        "PDB Stream Age doesn't match Dbi Stream Age!");
-
-  return std::move(File);
-}
-
 Error PDBFileBuilder::commit(StringRef Filename) {
   auto ExpectedLayout = finalizeMsfLayout();
   if (!ExpectedLayout)
Index: lib/DebugInfo/PDB/Raw/TpiStreamBuilder.cpp
===================================================================
--- lib/DebugInfo/PDB/Raw/TpiStreamBuilder.cpp
+++ lib/DebugInfo/PDB/Raw/TpiStreamBuilder.cpp
@@ -99,27 +99,6 @@
   return Error::success();
 }
 
-Expected<std::unique_ptr<TpiStream>> TpiStreamBuilder::build(PDBFile &File) {
-  if (!VerHeader.hasValue())
-    return make_error<RawError>(raw_error_code::unspecified,
-                                "Missing TPI Stream Version");
-  if (auto EC = finalize())
-    return std::move(EC);
-
-  auto StreamData = MappedBlockStream::createIndexedStream(
-      File.getMsfLayout(), File.getMsfBuffer(), Idx);
-  auto Tpi = llvm::make_unique<TpiStream>(File, std::move(StreamData));
-  Tpi->Header = Header;
-  Tpi->TypeRecords = VarStreamArray<codeview::CVType>(TypeRecordStream);
-  if (HashValueStream) {
-    Tpi->HashStream = std::move(HashValueStream);
-    StreamReader HSR(*Tpi->HashStream);
-    if (auto EC = HSR.readArray(Tpi->HashValues, TypeRecords.size()))
-      return std::move(EC);
-  }
-  return std::move(Tpi);
-}
-
 Error TpiStreamBuilder::commit(const msf::MSFLayout &Layout,
                                const msf::WritableStream &Buffer) {
   if (auto EC = finalize())