Support snapshots in sky_shell (again)

sky/engine/core/script/dart_controller.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sky/engine/core/script/dart_controller.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 131 matching lines @@
   Dart_Isolate isolate = dart_state()->isolate();
   DartIsolateScope isolate_scope(isolate);
   DartApiScope dart_api_scope;
 
   Dart_Handle library = Dart_RootLibrary();
   if (LogIfError(library))
     return;
   DartInvokeAppField(library, ToDart("main"), 0, nullptr);
 }
 
-void DartController::LoadSnapshot(const KURL& url, mojo::URLResponsePtr response) {
+void DartController::RunFromSnapshot(
+    mojo::ScopedDataPipeConsumerHandle snapshot) {
   snapshot_loader_ = adoptPtr(new DartSnapshotLoader(dart_state()));
   snapshot_loader_->LoadSnapshot(
-      response->body.Pass(),
+      snapshot.Pass(),
       base::Bind(&DartController::DidLoadSnapshot, weak_factory_.GetWeakPtr()));
 }
 
 void DartController::RunFromLibrary(const String& name,
                                     DartLibraryProvider* library_provider) {
   DartState::Scope scope(dart_state());
   CreateEmptyRootLibraryIfNeeded();
 
   DartLibraryLoader& loader = dart_state()->library_loader();
   loader.set_library_provider(library_provider);
@@ skipping 262 matching lines @@
                         nullptr,  // Isolate interrupt callback.
                         UnhandledExceptionCallback, IsolateShutdownCallback,
                         // File IO callbacks.
                         nullptr, nullptr, nullptr, nullptr, nullptr));
   // Wait for load port- ensures handle watcher and service isolates are
   // running.
   Dart_ServiceWaitForLoadPort();
 }
 
 } // namespace blink