clean up duplicate host:{} and @HostBinding

Author: annieyw

tools/public_api_guard/cdk/tree.d.ts

@@ -24,8 +24,6 @@ export declare class CdkNestedTreeNode<T> extends CdkTreeNode<T> implements Afte
     protected _children: T[];
     protected _differs: IterableDiffers;
     protected _elementRef: ElementRef<HTMLElement>;
-    _expanded: boolean;
-    _role: "treeitem" | "group";
     protected _tree: CdkTree<T>;
     nodeOutlet: QueryList<CdkTreeNodeOutlet>;
     constructor(_elementRef: ElementRef<HTMLElement>, _tree: CdkTree<T>, _differs: IterableDiffers);

tools/public_api_guard/material/tree/testing.d.ts

@@ -0,0 +1,28 @@
+export declare class MatTreeHarness extends ComponentHarness {
+    getNodes(filter?: TreeNodeHarnessFilters): Promise<MatTreeNodeHarness[]>;
+    static hostSelector: string;
+    static with(options?: TreeHarnessFilters): HarnessPredicate<MatTreeHarness>;
+}
+
+export declare class MatTreeNodeHarness extends ComponentHarness {
+    _toggle: import("@angular/cdk/testing").AsyncFactoryFn<import("@angular/cdk/testing").TestElement | null>;
+    collapse(): Promise<void>;
+    expand(): Promise<void>;
+    getLevel(): Promise<number>;
+    getText(): Promise<string>;
+    isDisabled(): Promise<boolean>;
+    isExpanded(): Promise<boolean>;
+    toggle(): Promise<void>;
+    static hostSelector: string;
+    static with(options?: TreeNodeHarnessFilters): HarnessPredicate<MatTreeNodeHarness>;
+}
+
+export interface TreeHarnessFilters extends BaseHarnessFilters {
+}
+
+export interface TreeNodeHarnessFilters extends BaseHarnessFilters {
+    disabled?: boolean;
+    expanded?: boolean;
+    level?: number;
+    text?: string | RegExp;
+}