cleanup(DI): clean up visibility decorators

BREAKING CHANGE:
    Replace @Ancestor() with @Host() @SkipSelf()
    Replace @Unbounded() wwith @SkipSelf()
    Replace @Ancestor({self:true}) with @Host()
    Replace @Unbounded({self:true}) with nothing
    Replace new AncestorMetadata() with [new HostMetadata(), new SkipSelfMetadata()]
    Replace new UnboundedMetadata() with new SkipSelfMetadata()
    Replace new Ancestor({self:true}) with new HostMetadata()

modules/angular2_material/src/components/dialog/dialog.ts

@@ -3,7 +3,8 @@ import {
   Directive,
   View,
   ViewEncapsulation,
-  Ancestor,
+  Host,
+  SkipSelf,
   ElementRef,
   DynamicComponentLoader,
   ComponentRef,
@@ -212,8 +213,7 @@ export class MdDialogConfig {
 })
 @View({
   templateUrl: 'package:angular2_material/src/components/dialog/dialog.html',
-  directives: [forwardRef(() => MdDialogContent)],
-  encapsulation: ViewEncapsulation.NONE
+  directives: [forwardRef(() => MdDialogContent)]
 })
 class MdDialogContainer {
   // Ref to the dialog content. Used by the DynamicComponentLoader to load the dialog content.
@@ -245,7 +245,7 @@ class MdDialogContainer {
  */
 @Directive({selector: 'md-dialog-content'})
 class MdDialogContent {
-  constructor(@Ancestor() dialogContainer: MdDialogContainer, elementRef: ElementRef) {
+  constructor(@Host() @SkipSelf() dialogContainer: MdDialogContainer, elementRef: ElementRef) {
     dialogContainer.contentRef = elementRef;
   }
 }

modules/angular2_material/src/components/grid_list/grid_list.ts

@@ -1,4 +1,11 @@
-import {Component, View, ViewEncapsulation, Ancestor, LifecycleEvent} from 'angular2/angular2';
+import {
+  Component,
+  View,
+  ViewEncapsulation,
+  Host,
+  SkipSelf,
+  LifecycleEvent
+} from 'angular2/angular2';
 
 import {ListWrapper} from 'angular2/src/facade/collection';
 import {StringWrapper, isPresent, isString, NumberWrapper} from 'angular2/src/facade/lang';
@@ -244,7 +251,7 @@ export class MdGridTile {
 
   isRegisteredWithGridList: boolean;
 
-  constructor(@Ancestor() gridList: MdGridList) {
+  constructor(@SkipSelf() @Host() gridList: MdGridList) {
     this.gridList = gridList;
 
     // Tiles default to 1x1, but rowspan and colspan can be changed via binding.

modules/angular2_material/src/components/input/input.ts

@@ -1,4 +1,4 @@
-import {Directive, LifecycleEvent, Attribute, Ancestor} from 'angular2/angular2';
+import {Directive, LifecycleEvent, Attribute, Host, SkipSelf} from 'angular2/angular2';
 
 import {ObservableWrapper, EventEmitter} from 'angular2/src/facade/async';
 
@@ -73,7 +73,7 @@ export class MdInput {
   mdChange: EventEmitter;
   mdFocusChange: EventEmitter;
 
-  constructor(@Attribute('value') value: string, @Ancestor() container: MdInputContainer,
+  constructor(@Attribute('value') value: string, @SkipSelf() @Host() container: MdInputContainer,
               @Attribute('id') id: string) {
     // TODO(jelbourn): Remove this when #1402 is done.
     this.yes = true;
@@ -111,7 +111,7 @@ export class MdInput {
 export class MdTextarea extends MdInput {
   constructor(
       @Attribute('value') value: string,
-      @Ancestor() container: MdInputContainer,
+      @SkipSelf() @Host() container: MdInputContainer,
       @Attribute('id') id: string) {
     super(value, container, id);
   }

modules/angular2_material/src/components/radio/radio_button.ts

@@ -3,7 +3,8 @@ import {
   View,
   ViewEncapsulation,
   LifecycleEvent,
-  Ancestor,
+  Host,
+  SkipSelf,
   Attribute,
   Optional
 } from 'angular2/angular2';
@@ -232,7 +233,7 @@ export class MdRadioButton {
 
   role: string;
 
-  constructor(@Optional() @Ancestor() radioGroup: MdRadioGroup, @Attribute('id') id: string,
+  constructor(@Optional() @SkipSelf() @Host() radioGroup: MdRadioGroup, @Attribute('id') id: string,
               @Attribute('tabindex') tabindex: string, radioDispatcher: MdRadioDispatcher) {
     // Assertions. Ideally these should be stripped out by the compiler.
     // TODO(jelbourn): Assert that there's no name binding AND a parent radio group.