Remove //tonic/filesystem|file_loader and library tag handling.

ci/licenses_golden/licenses_flutter

@@ -1150,18 +1150,6 @@ FILE: ../../../flutter/third_party/tonic/dart_state.h
 FILE: ../../../flutter/third_party/tonic/dart_wrappable.cc
 FILE: ../../../flutter/third_party/tonic/dart_wrappable.h
 FILE: ../../../flutter/third_party/tonic/dart_wrapper_info.h
-FILE: ../../../flutter/third_party/tonic/file_loader/file_loader.cc
-FILE: ../../../flutter/third_party/tonic/file_loader/file_loader.h
-FILE: ../../../flutter/third_party/tonic/file_loader/file_loader_fuchsia.cc
-FILE: ../../../flutter/third_party/tonic/file_loader/file_loader_posix.cc
-FILE: ../../../flutter/third_party/tonic/file_loader/file_loader_win.cc
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/eintr_wrapper.h
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/file.cc
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/file.h
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/path.h
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/path_posix.cc
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/path_win.cc
-FILE: ../../../flutter/third_party/tonic/filesystem/filesystem/portable_unistd.h
 FILE: ../../../flutter/third_party/tonic/logging/dart_error.cc
 FILE: ../../../flutter/third_party/tonic/logging/dart_error.h
 FILE: ../../../flutter/third_party/tonic/logging/dart_invoke.cc

runtime/dart_isolate.cc

@@ -23,7 +23,6 @@
 #include "third_party/tonic/dart_class_provider.h"
 #include "third_party/tonic/dart_message_handler.h"
 #include "third_party/tonic/dart_state.h"
-#include "third_party/tonic/file_loader/file_loader.h"
 #include "third_party/tonic/logging/dart_invoke.h"
 #include "third_party/tonic/scopes/dart_api_scope.h"
 #include "third_party/tonic/scopes/dart_isolate_scope.h"

runtime/dart_vm.cc

@@ -31,7 +31,6 @@
 #include "third_party/tonic/converter/dart_converter.h"
 #include "third_party/tonic/dart_class_library.h"
 #include "third_party/tonic/dart_class_provider.h"
-#include "third_party/tonic/file_loader/file_loader.h"
 #include "third_party/tonic/logging/dart_error.h"
 #include "third_party/tonic/scopes/dart_api_scope.h"
 #include "third_party/tonic/typed_data/typed_list.h"

shell/platform/fuchsia/dart_runner/dart_component_controller.cc

@@ -313,11 +313,9 @@ bool DartComponentController::CreateIsolate(
   // Create the isolate from the snapshot.
   char* error = nullptr;
 
-  // TODO(dart_runner): Pass if we start using tonic's loader.
-  intptr_t namespace_fd = -1;
   // Freed in IsolateShutdownCallback.
   auto state = new std::shared_ptr<tonic::DartState>(new tonic::DartState(
-      namespace_fd, [this](Dart_Handle result) { MessageEpilogue(result); }));
+      [this](Dart_Handle result) { MessageEpilogue(result); }));
 
   isolate_ = Dart_CreateIsolateGroup(
       url_.c_str(), label_.c_str(), isolate_snapshot_data,

third_party/tonic/BUILD.gn

@@ -37,7 +37,6 @@ source_set("tonic") {
   public_deps = [
     "common",
     "converter",
-    "file_loader",
     "logging",
     "scopes",
     "typed_data",

third_party/tonic/dart_state.cc

@@ -7,7 +7,6 @@
 #include "tonic/converter/dart_converter.h"
 #include "tonic/dart_class_library.h"
 #include "tonic/dart_message_handler.h"
-#include "tonic/file_loader/file_loader.h"
 
 namespace tonic {
 
@@ -19,12 +18,10 @@ DartState::Scope::Scope(std::shared_ptr<DartState> dart_state)
 
 DartState::Scope::~Scope() {}
 
-DartState::DartState(int dirfd,
-                     std::function<void(Dart_Handle)> message_epilogue)
+DartState::DartState(std::function<void(Dart_Handle)> message_epilogue)
     : isolate_(nullptr),
       class_library_(new DartClassLibrary),
       message_handler_(new DartMessageHandler()),
-      file_loader_(new FileLoader(dirfd)),
       message_epilogue_(message_epilogue),
       has_set_return_code_(false) {}
 
@@ -66,10 +63,4 @@ void DartState::SetReturnCodeCallback(std::function<void(uint32_t)> callback) {
 
 void DartState::DidSetIsolate() {}
 
-Dart_Handle DartState::HandleLibraryTag(Dart_LibraryTag tag,
-                                        Dart_Handle library,
-                                        Dart_Handle url) {
-  return Current()->file_loader().HandleLibraryTag(tag, library, url);
-}
-
 }  // namespace tonic

third_party/tonic/dart_state.h

@@ -37,8 +37,7 @@ class DartState : public std::enable_shared_from_this<DartState> {
     DartApiScope api_scope_;
   };
 
-  DartState(int dirfd = -1,
-            std::function<void(Dart_Handle)> message_epilogue = nullptr);
+  DartState(std::function<void(Dart_Handle)> message_epilogue = nullptr);
   virtual ~DartState();
 
   static DartState* From(Dart_Isolate isolate);
@@ -51,7 +50,6 @@ class DartState : public std::enable_shared_from_this<DartState> {
 
   DartClassLibrary& class_library() { return *class_library_; }
   DartMessageHandler& message_handler() { return *message_handler_; }
-  FileLoader& file_loader() { return *file_loader_; }
 
   void MessageEpilogue(Dart_Handle message_result) {
     if (message_epilogue_) {
@@ -72,7 +70,6 @@ class DartState : public std::enable_shared_from_this<DartState> {
   Dart_Isolate isolate_;
   std::unique_ptr<DartClassLibrary> class_library_;
   std::unique_ptr<DartMessageHandler> message_handler_;
-  std::unique_ptr<FileLoader> file_loader_;
   std::function<void(Dart_Handle)> message_epilogue_;
   std::function<void(uint32_t)> set_return_code_callback_;
   bool has_set_return_code_;