resolve comments

Author: andrewseguin

src/lib/core/overlay/position/connected-position-strategy.ts

@@ -11,6 +11,11 @@ import {Subject} from 'rxjs/Subject';
 import {Observable} from 'rxjs/Observable';
 import {Scrollable} from '../scroll/scrollable';
 
+/**
+ * Container to hold the bounding positions of a particular element with respect to the viewport,
+ * where top and bottom are the y-axis coordinates of the bounding rectangle and left and right are
+ * the x-axis coordinates.
+ */
 export type ElementBoundingPositions = {
   top: number;
   right: number;

src/lib/tooltip/tooltip.ts

@@ -185,7 +185,7 @@ export class MdTooltip implements OnInit, OnDestroy {
     // close the tooltip.
     let strategy = this._overlay.position().connectedTo(this._elementRef, origin, position);
     strategy.withScrollableContainers(this._scrollDispatcher.getScrollContainers(this._elementRef));
-    strategy.onPositionChange.subscribe((change: ConnectedOverlayPositionChange) => {
+    strategy.onPositionChange.subscribe(change => {
       if (change.scrollableViewProperties.isOverlayClipped) {
         this.hide(0);
       }