Support notebook file types contribution (#3196)

* Support notebook file types contribution
- Extensions can define a provider and what file types it should be used for
- Verified that this works for Jupyter Content & Server Managers.
- Starts Jupyter server as expected

Not in this PR:
- Support for session manager end to end
- Tests

src/sql/parts/notebook/notebook.contribution.ts

@@ -13,10 +13,12 @@ import { TPromise } from 'vs/base/common/winjs.base';
 import { Schemas } from 'vs/base/common/network';
 import URI from 'vs/base/common/uri';
 import { localize } from 'vs/nls';
+import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
 
 import { NotebookInput, NotebookInputModel } from 'sql/parts/notebook/notebookInput';
 import { NotebookEditor } from 'sql/parts/notebook/notebookEditor';
 
+
 let counter = 0;
 
 /**
@@ -31,7 +33,8 @@ export class OpenNotebookAction extends Action {
 	constructor(
 		id: string,
 		label: string,
-		@IEditorService private _editorService: IEditorService
+		@IEditorService private _editorService: IEditorService,
+		@IInstantiationService private _instantiationService: IInstantiationService
 	) {
 		super(id, label);
 	}
@@ -40,7 +43,7 @@ export class OpenNotebookAction extends Action {
 		return new TPromise<void>((resolve, reject) => {
 			let untitledUri = URI.from({ scheme: Schemas.untitled, path: `Untitled-${counter++}`});
 			let model = new NotebookInputModel(untitledUri, undefined, false, undefined);
-			let input = new NotebookInput('modelViewId', model,);
+			let input = this._instantiationService.createInstance(NotebookInput, 'modelViewId', model);
 			this._editorService.openEditor(input, { pinned: true });
 		});
 	}

src/sql/parts/notebook/notebookInput.ts

@@ -10,6 +10,7 @@ import { IEditorModel } from 'vs/platform/editor/common/editor';
 import { EditorInput, EditorModel, ConfirmResult } from 'vs/workbench/common/editor';
 import { Emitter, Event } from 'vs/base/common/event';
 import URI from 'vs/base/common/uri';
+import { INotebookService } from 'sql/services/notebook/notebookService';
 
 export type ModeViewSaveHandler = (handle: number) => Thenable<boolean>;
 
@@ -66,11 +67,17 @@ export class NotebookInput extends EditorInput {
 	// Holds the HTML content for the editor when the editor discards this input and loads another
 	private _parentContainer: HTMLElement;
 
-	constructor(private _title: string, private _model: NotebookInputModel,
+	constructor(private _title: string,
+		private _model: NotebookInputModel,
+		@INotebookService private notebookService: INotebookService
 	) {
 		super();
 		this._model.onDidChangeDirty(() => this._onDidChangeDirty.fire());
-
+		this.onDispose(() => {
+			if (this.notebookService) {
+				this.notebookService.handleNotebookClosed(this.notebookUri);
+			}
+		});
 	}
 
 	public get title(): string {