address some comments

Author: mmalerba

src/cdk/collections/data-source.ts

@@ -7,7 +7,6 @@
  */
 
 import {Observable} from 'rxjs/Observable';
-import {of} from 'rxjs/observable/of';
 import {CollectionViewer} from './collection-viewer';
 
 
@@ -31,15 +30,3 @@ export abstract class DataSource<T> {
    */
   abstract disconnect(collectionViewer: CollectionViewer): void;
 }
-
-
-/** DataSource wrapper for a native array. */
-export class ArrayDataSource<T> implements DataSource<T> {
-  constructor(private _data: T[]) {}
-
-  connect(): Observable<T[]> {
-    return of(this._data);
-  }
-
-  disconnect() {}
-}

src/cdk/collections/public-api.ts

@@ -9,6 +9,7 @@
 export * from './collection-viewer';
 export * from './data-source';
 export * from './selection';
+export * from './static-array-data-source';
 export {
   UniqueSelectionDispatcher,
   UniqueSelectionDispatcherListener,

src/cdk/collections/static-array-data-source.ts

@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Observable} from 'rxjs/Observable';
+import {of as observableOf} from 'rxjs/observable/of';
+import {DataSource} from './data-source';
+
+
+/** DataSource wrapper for a native array. */
+export class StaticArrayDataSource<T> implements DataSource<T> {
+  constructor(private _data: T[]) {}
+
+  connect(): Observable<T[]> {
+    return observableOf(this._data);
+  }
+
+  disconnect() {}
+}

src/cdk/scrolling/public-api.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-export * from './for-of';
+export * from './virtual-for-of';
 export * from './scroll-dispatcher';
 export * from './scrollable';
 export * from './scrolling-module';

src/cdk/scrolling/scrolling-module.ts

@@ -8,7 +8,7 @@
 
 import {PlatformModule} from '@angular/cdk/platform';
 import {NgModule} from '@angular/core';
-import {CdkForOf} from './for-of';
+import {CdkVirtualForOf} from './virtual-for-of';
 import {SCROLL_DISPATCHER_PROVIDER} from './scroll-dispatcher';
 import {CdkScrollable} from './scrollable';
 import {CdkVirtualScrollFixedSize} from './virtual-scroll-fixed-size';
@@ -17,13 +17,13 @@ import {CdkVirtualScrollViewport} from './virtual-scroll-viewport';
 @NgModule({
   imports: [PlatformModule],
   exports: [
-    CdkForOf,
+    CdkVirtualForOf,
     CdkScrollable,
     CdkVirtualScrollFixedSize,
     CdkVirtualScrollViewport,
   ],
   declarations: [
-    CdkForOf,
+    CdkVirtualForOf,
     CdkScrollable,
     CdkVirtualScrollFixedSize,
     CdkVirtualScrollViewport,