refactor(compiler): generate less code for bindings to DOM elements

Detailed changes:
- remove `UNINITIALIZED`, initialize change detection fields with `undefined`.
  * we use `view.numberOfChecks === 0` now everywhere
    as indicator whether we are in the first change detection cycle
    (previously we used this only in a couple of places).
  * we keep the initialization itself as change detection get slower without it.
- remove passing around `throwOnChange` in various generated calls,
  and store it on the view as property instead.
- change generated code for bindings to DOM elements as follows:
  Before:
  ```
  var currVal_10 = self.context.bgColor;
  if (jit_checkBinding15(self.throwOnChange,self._expr_10,currVal_10)) {
    self.renderer.setElementStyle(self._el_0,'backgroundColor',((self.viewUtils.sanitizer.sanitize(jit_21,currVal_10) == null)? null: self.viewUtils.sanitizer.sanitize(jit_21,currVal_10).toString()));
    self._expr_10 = currVal_10;
  }
  var currVal_11 = jit_inlineInterpolate16(1,' ',self.context.data.value,' ');
  if (jit_checkBinding15(self.throwOnChange,self._expr_11,currVal_11)) {
    self.renderer.setText(self._text_1,currVal_11);
    self._expr_11 = currVal_11;
  }
  ```,
  After:
  ```
  var currVal_10 = self.context.bgColor;
  jit_checkRenderStyle14(self,self._el_0,'backgroundColor',null,self._expr_10,self._expr_10=currVal_10,false,jit_21);
  var currVal_11 = jit_inlineInterpolate15(1,' ',self.context.data.value,' ');
  jit_checkRenderText16(self,self._text_1,self._expr_11,self._expr_11=currVal_11,false);
  ```

Performance impact:
- None seen (checked against internal latency lab)

Part of #13651

modules/benchmarks/src/tree/ng2/init.ts

@@ -29,7 +29,7 @@ export function init(moduleRef: NgModuleRef<AppModule>) {
   }
 
   function detectChanges() {
-    for (var i = 0; i < 10; i++) {
+    for (let i = 0; i < 10; i++) {
       appRef.tick();
     }
     detectChangesRuns += 10;

modules/benchmarks/src/tree/ng2_ftl/tree_host.ngfactory.ts

@@ -41,8 +41,8 @@ class _View_TreeComponent_Host0 extends import1.AppView<any> {
     this.init([].concat([this._el_0]), [this._el_0], []);
     return new import9.ComponentRef_(0, this, this._el_0, this._TreeComponent_0_4.context);
   }
-  detectChangesInternal(throwOnChange: boolean): void {
-    this._TreeComponent_0_4.detectChangesInternal(throwOnChange);
+  detectChangesInternal(): void {
+    this._TreeComponent_0_4.detectChangesInternal(this.throwOnChange);
   }
   destroyInternal(): void { this._TreeComponent_0_4.destroyInternal(); }
   injectorGetInternal(token: any, requestNodeIndex: number, notFoundResult: any): any {

modules/benchmarks/src/tree/ng2_static_ftl/tree_root.ngfactory.ts

@@ -49,8 +49,8 @@ class _View_TreeRootComponent_Host0 extends import1.AppView<any> {
     this.init([].concat([this._el_0]), [this._el_0], []);
     return new import9.ComponentRef_(0, this, this._el_0, this._TreeRootComponent_0_4);
   }
-  detectChangesInternal(throwOnChange: boolean): void {
-    this._TreeRootComponent_0_4_View.detectChangesInternal(throwOnChange);
+  detectChangesInternal(): void {
+    this._TreeRootComponent_0_4_View.detectChangesInternal(this.throwOnChange);
   }
   destroyInternal(): void { this._TreeRootComponent_0_4_View.destroyInternal(); }
   injectorGetInternal(token: any, requestNodeIndex: number, notFoundResult: any): any {
@@ -106,13 +106,13 @@ class _View_TreeRootComponent0 extends import1.AppView<import3.TreeRootComponent
     }
     return notFoundResult;
   }
-  detectChangesInternal(throwOnChange: boolean): void {
+  detectChangesInternal(): void {
     const currVal_0: any = (this.context.data.left != (null as any));
-    if (checkBinding(throwOnChange, this._expr_0, currVal_0)) {
+    if (checkBinding(this.throwOnChange, this._expr_0, currVal_0)) {
       this._NgIf_0_6.ngIf = currVal_0;
       this._expr_0 = currVal_0;
     }
-    this._appEl_0.detectChangesInNestedViews(throwOnChange);
+    this._appEl_0.detectChangesInNestedViews(this.throwOnChange);
   }
 }
 class _View_TreeRootComponent1 extends import1.AppView<any> {
@@ -133,9 +133,9 @@ class _View_TreeRootComponent1 extends import1.AppView<any> {
     return (null as any);
   }
   destroyInternal() { this._TreeComponent0_0_4View.destroyInternal(); }
-  detectChangesInternal(throwOnChange: boolean): void {
+  detectChangesInternal(): void {
     this._TreeComponent0_0_4View.updateData(this.parentView.context.data);
-    this._TreeComponent0_0_4View.detectChangesInternal(throwOnChange);
+    this._TreeComponent0_0_4View.detectChangesInternal(this.throwOnChange);
   }
   visitRootNodesInternal(cb: any, context: any) { cb(this._el_0, context); }
 }