build: rename @deletion-target to @Breaking-Change (#12421)

As discussed, renames the `@deletion-target` tag to `@breaking-change` to make the intentions of the tag clearer. Also adds an extra check to the tslint rule to catch any leftover `@deletion-target` tags.

Author: crisbeto

src/cdk/a11y/aria-describer/aria-describer.ts

@@ -225,12 +225,12 @@ export class AriaDescriber implements OnDestroy {
 }
 
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function ARIA_DESCRIBER_PROVIDER_FACTORY(parentDispatcher: AriaDescriber, _document: any) {
   return parentDispatcher || new AriaDescriber(_document);
 }
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export const ARIA_DESCRIBER_PROVIDER = {
   // If there is already an AriaDescriber available, use that. Otherwise, provide a new one.
   provide: AriaDescriber,

src/cdk/a11y/focus-monitor/focus-monitor.ts

@@ -402,13 +402,13 @@ export class CdkMonitorFocus implements OnDestroy {
   }
 }
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function FOCUS_MONITOR_PROVIDER_FACTORY(
     parentDispatcher: FocusMonitor, ngZone: NgZone, platform: Platform) {
   return parentDispatcher || new FocusMonitor(ngZone, platform);
 }
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export const FOCUS_MONITOR_PROVIDER = {
   // If there is already a FocusMonitor available, use that. Otherwise, provide a new one.
   provide: FocusMonitor,

src/cdk/a11y/focus-trap/focus-trap.ts

@@ -152,7 +152,7 @@ export class FocusTrap {
                                                  `[cdk-focus-${bound}]`) as NodeListOf<HTMLElement>;
 
     for (let i = 0; i < markers.length; i++) {
-      // @deletion-target 7.0.0
+      // @breaking-change 7.0.0
       if (markers[i].hasAttribute(`cdk-focus-${bound}`)) {
         console.warn(`Found use of deprecated attribute 'cdk-focus-${bound}', ` +
                      `use 'cdkFocusRegion${bound}' instead. The deprecated ` +
@@ -181,7 +181,7 @@ export class FocusTrap {
                                                           `[cdkFocusInitial]`) as HTMLElement;
 
     if (redirectToElement) {
-      // @deletion-target 7.0.0
+      // @breaking-change 7.0.0
       if (redirectToElement.hasAttribute(`cdk-focus-initial`)) {
         console.warn(`Found use of deprecated attribute 'cdk-focus-initial', ` +
                     `use 'cdkFocusInitial' instead. The deprecated attribute ` +

src/cdk/a11y/key-manager/list-key-manager.ts

@@ -305,7 +305,7 @@ export class ListKeyManager<T extends ListKeyManagerOption> {
    * Allows setting of the activeItemIndex without any other effects.
    * @param index The new activeItemIndex.
    * @deprecated Use `updateActiveItem` instead.
-   * @deletion-target 7.0.0
+   * @breaking-change 7.0.0
    */
   updateActiveItemIndex(index: number): void {
     this.updateActiveItem(index);

src/cdk/a11y/live-announcer/live-announcer.ts

@@ -132,14 +132,14 @@ export class CdkAriaLive implements OnDestroy {
 }
 
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function LIVE_ANNOUNCER_PROVIDER_FACTORY(
     parentDispatcher: LiveAnnouncer, liveElement: any, _document: any) {
   return parentDispatcher || new LiveAnnouncer(liveElement, _document);
 }
 
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export const LIVE_ANNOUNCER_PROVIDER: Provider = {
   // If there is already a LiveAnnouncer available, use that. Otherwise, provide a new one.
   provide: LiveAnnouncer,

src/cdk/overlay/keyboard/overlay-keyboard-dispatcher.ts

@@ -96,13 +96,13 @@ export class OverlayKeyboardDispatcher implements OnDestroy {
 }
 
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function OVERLAY_KEYBOARD_DISPATCHER_PROVIDER_FACTORY(
     dispatcher: OverlayKeyboardDispatcher, _document: any) {
   return dispatcher || new OverlayKeyboardDispatcher(_document);
 }
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export const OVERLAY_KEYBOARD_DISPATCHER_PROVIDER = {
   // If there is already an OverlayKeyboardDispatcher available, use that.
   // Otherwise, provide a new one.

src/cdk/overlay/overlay-container.ts

@@ -55,13 +55,13 @@ export class OverlayContainer implements OnDestroy {
 }
 
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function OVERLAY_CONTAINER_PROVIDER_FACTORY(parentContainer: OverlayContainer,
   _document: any) {
   return parentContainer || new OverlayContainer(_document);
 }
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export const OVERLAY_CONTAINER_PROVIDER = {
   // If there is already an OverlayContainer available, use that. Otherwise, provide a new one.
   provide: OverlayContainer,

src/cdk/overlay/overlay-directives.ts

@@ -73,7 +73,7 @@ const defaultPositionList: ConnectedPosition[] = [
 export const CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY =
     new InjectionToken<() => ScrollStrategy>('cdk-connected-overlay-scroll-strategy');
 
-/** @docs-private @deprecated @deletion-target 7.0.0 */
+/** @docs-private @deprecated @breaking-change 7.0.0 */
 export function CDK_CONNECTED_OVERLAY_SCROLL_STRATEGY_FACTORY(overlay: Overlay):
   () => ScrollStrategy {
   return (config?: RepositionScrollStrategyConfig) => overlay.scrollStrategies.reposition(config);

src/cdk/overlay/overlay-module.ts

@@ -35,7 +35,7 @@ export class OverlayModule {}
 
 /**
  * @deprecated Use `OverlayModule` instead.
- * @deletion-target 7.0.0
+ * @breaking-change 7.0.0
  */
 export const OVERLAY_PROVIDERS: Provider[] = [
   Overlay,

src/cdk/overlay/position/connected-position-strategy.ts

@@ -28,7 +28,7 @@ import {OverlayReference} from '../overlay-reference';
  * a basic dropdown is connecting the bottom-left corner of the origin to the top-left corner
  * of the overlay.
  * @deprecated Use `FlexibleConnectedPositionStrategy` instead.
- * @deletion-target 7.0.0
+ * @breaking-change 7.0.0
  */
 export class ConnectedPositionStrategy implements PositionStrategy {
   /**
@@ -61,7 +61,7 @@ export class ConnectedPositionStrategy implements PositionStrategy {
       connectedTo: ElementRef,
       viewportRuler: ViewportRuler,
       document: Document,
-      // @deletion-target 7.0.0 `platform` parameter to be made required.
+      // @breaking-change 7.0.0 `platform` parameter to be made required.
       platform?: Platform) {
 
     // Since the `ConnectedPositionStrategy` is deprecated and we don't want to maintain