chore(imports): don't import ExceptionHandler from facade (#10620)

This lets us skip src/facade/exception* when compiling modules other than core.
It prevents having many conflicting declarations

modules/@angular/common/src/directives/ng_for.ts

@@ -6,9 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {ChangeDetectorRef, CollectionChangeRecord, DefaultIterableDiffer, Directive, DoCheck, EmbeddedViewRef, Input, IterableDiffer, IterableDiffers, OnChanges, SimpleChanges, TemplateRef, TrackByFn, ViewContainerRef} from '@angular/core';
+import {BaseException, ChangeDetectorRef, CollectionChangeRecord, DefaultIterableDiffer, Directive, DoCheck, EmbeddedViewRef, Input, IterableDiffer, IterableDiffers, OnChanges, SimpleChanges, TemplateRef, TrackByFn, ViewContainerRef} from '@angular/core';
 
-import {BaseException} from '../facade/exceptions';
 import {getTypeNameForDebugging, isBlank, isPresent} from '../facade/lang';
 
 export class NgForRow {

modules/@angular/common/src/forms-deprecated/directives/abstract_control_directive.ts

@@ -6,10 +6,13 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {unimplemented} from '../../facade/exceptions';
+import {BaseException} from '@angular/core';
 import {isPresent} from '../../facade/lang';
 import {AbstractControl} from '../model';
 
+function unimplemented(): any {
+  throw new BaseException('unimplemented');
+}
 
 /**
  * Base class for control directives.

modules/@angular/common/src/forms-deprecated/directives/ng_control.ts

@@ -6,12 +6,14 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {unimplemented} from '../../facade/exceptions';
-
+import {BaseException} from '@angular/core';
 import {AbstractControlDirective} from './abstract_control_directive';
 import {ControlValueAccessor} from './control_value_accessor';
 import {AsyncValidatorFn, ValidatorFn} from './validators';
 
+function unimplemented(): any {
+  throw new BaseException('unimplemented');
+}
 
 /**
  * A base class that all control directive extend.

modules/@angular/common/src/forms-deprecated/directives/ng_form_model.ts

@@ -6,11 +6,10 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Directive, Inject, OnChanges, Optional, Self, SimpleChanges, forwardRef} from '@angular/core';
+import {BaseException, Directive, Inject, OnChanges, Optional, Self, SimpleChanges, forwardRef} from '@angular/core';
 
 import {EventEmitter} from '../../facade/async';
 import {ListWrapper, StringMapWrapper} from '../../facade/collection';
-import {BaseException} from '../../facade/exceptions';
 import {isBlank} from '../../facade/lang';
 import {Control, ControlGroup} from '../model';
 import {NG_ASYNC_VALIDATORS, NG_VALIDATORS, Validators} from '../validators';

modules/@angular/common/src/forms-deprecated/directives/shared.ts

@@ -6,8 +6,9 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+import {BaseException} from '@angular/core';
+
 import {ListWrapper, StringMapWrapper} from '../../facade/collection';
-import {BaseException} from '../../facade/exceptions';
 import {hasConstructor, isBlank, isPresent, looseIdentical} from '../../facade/lang';
 import {Control, ControlGroup} from '../model';
 import {Validators} from '../validators';

modules/@angular/common/src/location/path_location_strategy.ts

@@ -6,9 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Inject, Injectable, Optional} from '@angular/core';
+import {BaseException, Inject, Injectable, Optional} from '@angular/core';
 
-import {BaseException} from '../facade/exceptions';
 import {isBlank} from '../facade/lang';
 
 import {Location} from './location';

modules/@angular/common/src/pipes/invalid_pipe_argument_exception.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {BaseException} from '../facade/exceptions';
+import {BaseException} from '@angular/core';
 import {Type, stringify} from '../facade/lang';
 
 export class InvalidPipeArgumentException extends BaseException {