Revert r43217, r43215, r43208, r43207, and r43202.

runtime/bin/dartutils.cc

Index: runtime/bin/dartutils.cc
diff --git a/runtime/bin/dartutils.cc b/runtime/bin/dartutils.cc
index d8f6549ca35d057a3fcc6876cda952ddbefe0b1a..c2eb2e0eae756a53e87a9c98b4a38186e3fa1620 100644
--- a/runtime/bin/dartutils.cc
+++ b/runtime/bin/dartutils.cc
@@ -15,7 +15,6 @@
 #include "bin/extensions.h"
 #include "bin/file.h"
 #include "bin/io_buffer.h"
-#include "bin/platform.h"
 #include "bin/socket.h"
 #include "bin/utils.h"
 
@@ -478,13 +477,6 @@ void DartUtils::WriteMagicNumber(File* file) {
 Dart_Handle DartUtils::LoadScript(const char* script_uri,
                                   Dart_Handle builtin_lib) {
   Dart_Handle uri = Dart_NewStringFromCString(script_uri);
-
-  Dart_Port load_port = Dart_ServiceWaitForLoadPort();
-  if (load_port == ILLEGAL_PORT) {
-    return NewDartUnsupportedError("Service did not return load port.");
-  }
-  Builtin::SetLoadPort(load_port);
-
   return LoadDataAsync_Invoke(Dart_Null(), uri, Dart_Null(), builtin_lib);
 }
 
@@ -598,137 +590,93 @@ void FUNCTION_NAME(Builtin_DoneLoading)(Dart_NativeArguments args) {
 }
 
 
-void FUNCTION_NAME(Builtin_NativeLibraryExtension)(Dart_NativeArguments args) {
-  const char* suffix = Platform::LibraryExtension();
-  ASSERT(suffix != NULL);
-  Dart_Handle res = Dart_NewStringFromCString(suffix);
-  if (Dart_IsError(res)) {
-    Dart_PropagateError(res);
-  }
-  Dart_SetReturnValue(args, res);
-}
-
-
-void DartUtils::PrepareBuiltinLibrary(Dart_Handle builtin_lib,
-                                      const char* package_root) {
-  Dart_Handle url = NewString(kInternalLibURL);
+Dart_Handle DartUtils::PrepareForScriptLoading(const char* package_root,
+                                               Dart_Handle builtin_lib) {
+  // First ensure all required libraries are available.
+  Dart_Handle url = NewString(kAsyncLibURL);
   DART_CHECK_VALID(url);
-  Dart_Handle internal_lib = Dart_LookupLibrary(url);
-  DART_CHECK_VALID(internal_lib);
+  Dart_Handle async_lib = Dart_LookupLibrary(url);
+  DART_CHECK_VALID(async_lib);
+  Dart_Handle io_lib = Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
+
+  // We need to ensure that all the scripts loaded so far are finalized
+  // as we are about to invoke some Dart code below to setup closures.
+  Dart_Handle result = Dart_FinalizeLoading(false);
+  DART_CHECK_VALID(result);
 
   // Setup the internal library's 'internalPrint' function.
   Dart_Handle print = Dart_Invoke(
       builtin_lib, NewString("_getPrintClosure"), 0, NULL);
-  DART_CHECK_VALID(print);
-  Dart_Handle result =
-      Dart_SetField(internal_lib, NewString("_printClosure"), print);
-  DART_CHECK_VALID(result);
-
-  if (IsWindowsHost()) {
-    // Set running on Windows flag.
-    result = Dart_Invoke(builtin_lib, NewString("_setWindows"), 0, NULL);
-    DART_CHECK_VALID(result);
-  }
-
-  // Set current working directory.
-  result = SetWorkingDirectory(builtin_lib);
-  DART_CHECK_VALID(result);
-
-  // Set up package root if specified.
-  if (package_root != NULL) {
-    result = NewString(package_root);
-    DART_CHECK_VALID(result);
-    const int kNumArgs = 1;
-    Dart_Handle dart_args[kNumArgs];
-    dart_args[0] = result;
-    result = Dart_Invoke(builtin_lib,
-                         NewString("_setPackageRoot"),
-                         kNumArgs,
-                         dart_args);
-    DART_CHECK_VALID(result);
-  }
-}
-
-
-void DartUtils::PrepareCoreLibrary(Dart_Handle builtin_lib) {
-  Dart_Handle url = NewString(kCoreLibURL);
+  url = NewString(kInternalLibURL);
   DART_CHECK_VALID(url);
-  Dart_Handle core_lib = Dart_LookupLibrary(url);
-  DART_CHECK_VALID(core_lib);
-
-  // Setup the 'Uri.base' getter in dart:core.
-  Dart_Handle uri_base = Dart_Invoke(
-      builtin_lib, NewString("_getUriBaseClosure"), 0, NULL);
-  DART_CHECK_VALID(uri_base);
-  Dart_Handle result = Dart_SetField(core_lib,
-                                     NewString("_uriBaseClosure"),
-                                     uri_base);
+  Dart_Handle internal_lib = Dart_LookupLibrary(url);
+  DART_CHECK_VALID(internal_lib);
+  result = Dart_SetField(internal_lib,
+                         NewString("_printClosure"),
+                         print);
   DART_CHECK_VALID(result);
-}
 
-
-void DartUtils::PrepareAsyncLibrary(Dart_Handle async_lib,
-                                    Dart_Handle io_lib) {
-  Dart_Handle url = NewString(kIsolateLibURL);
-  DART_CHECK_VALID(url);
-  Dart_Handle isolate_lib = Dart_LookupLibrary(url);
-  DART_CHECK_VALID(isolate_lib);
-
-  // Setup the 'timer' factory in dart:async.
+  // Setup the 'timer' factory.
   Dart_Handle timer_closure =
       Dart_Invoke(io_lib, NewString("_getTimerFactoryClosure"), 0, NULL);
-  DART_CHECK_VALID(timer_closure);
   Dart_Handle args[1];
   args[0] = timer_closure;
   DART_CHECK_VALID(Dart_Invoke(
       async_lib, NewString("_setTimerFactoryClosure"), 1, args));
 
-  // Setup the 'scheduleImmediate' closure in dart:async.
+  // Setup the 'scheduleImmediate' closure.
+  url = NewString(kIsolateLibURL);
+  DART_CHECK_VALID(url);
+  Dart_Handle isolate_lib = Dart_LookupLibrary(url);
+  DART_CHECK_VALID(isolate_lib);
   Dart_Handle schedule_immediate_closure =
       Dart_Invoke(isolate_lib, NewString("_getIsolateScheduleImmediateClosure"),
                   0, NULL);
   args[0] = schedule_immediate_closure;
   DART_CHECK_VALID(Dart_Invoke(
       async_lib, NewString("_setScheduleImmediateClosure"), 1, args));
-}
-
 
-Dart_Handle DartUtils::PrepareForScriptLoading(const char* package_root,
-                                               Dart_Handle builtin_lib) {
-  // First ensure all required libraries are available.
-  Dart_Handle url = NewString(kAsyncLibURL);
+  // Setup the corelib 'Uri.base' getter.
+  url = NewString(kCoreLibURL);
   DART_CHECK_VALID(url);
-  Dart_Handle async_lib = Dart_LookupLibrary(url);
-  DART_CHECK_VALID(async_lib);
-  Dart_Handle io_lib = Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
-
-  // We need to ensure that all the scripts loaded so far are finalized
-  // as we are about to invoke some Dart code below to setup closures.
-  Dart_Handle result = Dart_FinalizeLoading(false);
+  Dart_Handle corelib = Dart_LookupLibrary(url);
+  DART_CHECK_VALID(corelib);
+  Dart_Handle uri_base = Dart_Invoke(
+      builtin_lib, NewString("_getUriBaseClosure"), 0, NULL);
+  DART_CHECK_VALID(uri_base);
+  result = Dart_SetField(corelib,
+                         NewString("_uriBaseClosure"),
+                         uri_base);
   DART_CHECK_VALID(result);
 
-  PrepareBuiltinLibrary(builtin_lib, package_root);
-  PrepareAsyncLibrary(async_lib, io_lib);
-  PrepareCoreLibrary(builtin_lib);
-
-  return result;
-}
+  if (IsWindowsHost()) {
+    // Set running on Windows flag.
+    result = Dart_Invoke(builtin_lib, NewString("_setWindows"), 0, NULL);
+    if (Dart_IsError(result)) {
+      return result;
+    }
+  }
 
+  // Set current working directory.
+  result = SetWorkingDirectory(builtin_lib);
+  if (Dart_IsError(result)) {
+    return result;
+  }
 
-void DartUtils::SetupIOLibrary(const char* script_uri) {
-  Dart_Handle io_lib_url = NewString(kIOLibURL);
-  DART_CHECK_VALID(io_lib_url);
-  Dart_Handle io_lib = Dart_LookupLibrary(io_lib_url);
-  DART_CHECK_VALID(io_lib);
-  Dart_Handle platform_type = GetDartType(DartUtils::kIOLibURL, "_Platform");
-  DART_CHECK_VALID(platform_type);
-  Dart_Handle script_name = NewString("_nativeScript");
-  DART_CHECK_VALID(script_name);
-  Dart_Handle dart_script = NewString(script_uri);
-  DART_CHECK_VALID(dart_script);
-  Dart_Handle set_script_name =
-      Dart_SetField(platform_type, script_name, dart_script);
-  DART_CHECK_VALID(set_script_name);
+  // Set up package root if specified.
+  if (package_root != NULL) {
+    result = NewString(package_root);
+    if (!Dart_IsError(result)) {
+      const int kNumArgs = 1;
+      Dart_Handle dart_args[kNumArgs];
+      dart_args[0] = result;
+      return Dart_Invoke(builtin_lib,
+                         NewString("_setPackageRoot"),
+                         kNumArgs,
+                         dart_args);
+    }
+  }
+  return result;
 }
 
 
@@ -821,13 +769,6 @@ Dart_Handle DartUtils::NewDartArgumentError(const char* message) {
 }
 
 
-Dart_Handle DartUtils::NewDartUnsupportedError(const char* message) {
-  return NewDartExceptionWithMessage(kCoreLibURL,
-                                     "UnsupportedError",
-                                     message);
-}
-
-
 Dart_Handle DartUtils::NewDartIOException(const char* exception_name,
                                           const char* message,
                                           Dart_Handle os_error) {