fix(???): make ErrorStateMatcher tree-shakable

In order to be tree-shakable, services must be marked as `providedIn`
and they must not be explicitly referenced in the `providers` of an
`NgModule`.

Author: ranma42

src/material-experimental/mdc-chips/module.ts

@@ -9,11 +9,7 @@
 import {ENTER} from '@angular/cdk/keycodes';
 import {CommonModule} from '@angular/common';
 import {NgModule} from '@angular/core';
-import {
-  ErrorStateMatcher,
-  MatCommonModule,
-  MatRippleModule,
-} from '@angular/material-experimental/mdc-core';
+import {MatCommonModule, MatRippleModule} from '@angular/material/core';
 import {MatChip, MatChipCssInternalOnly} from './chip';
 import {MAT_CHIPS_DEFAULT_OPTIONS, MatChipsDefaultOptions} from './chip-default-options';
 import {MatChipEditInput} from './chip-edit-input';
@@ -45,7 +41,6 @@ const CHIP_DECLARATIONS = [
   exports: [MatCommonModule, CHIP_DECLARATIONS],
   declarations: CHIP_DECLARATIONS,
   providers: [
-    ErrorStateMatcher,
     {
       provide: MAT_CHIPS_DEFAULT_OPTIONS,
       useValue: {

src/material/chips/chips-module.ts

@@ -8,7 +8,7 @@
 
 import {ENTER} from '@angular/cdk/keycodes';
 import {NgModule} from '@angular/core';
-import {ErrorStateMatcher, MatCommonModule} from '@angular/material/core';
+import {MatCommonModule} from '@angular/material/core';
 import {MatChip, MatChipAvatar, MatChipRemove, MatChipTrailingIcon} from './chip';
 import {MAT_CHIPS_DEFAULT_OPTIONS, MatChipsDefaultOptions} from './chip-default-options';
 import {MatChipInput} from './chip-input';
@@ -28,7 +28,6 @@ const CHIP_DECLARATIONS = [
   exports: CHIP_DECLARATIONS,
   declarations: CHIP_DECLARATIONS,
   providers: [
-    ErrorStateMatcher,
     {
       provide: MAT_CHIPS_DEFAULT_OPTIONS,
       useValue: {

src/material/input/input-module.ts

@@ -8,7 +8,7 @@
 
 import {TextFieldModule} from '@angular/cdk/text-field';
 import {NgModule} from '@angular/core';
-import {ErrorStateMatcher, MatCommonModule} from '@angular/material/core';
+import {MatCommonModule} from '@angular/material/core';
 import {MatFormFieldModule} from '@angular/material/form-field';
 import {MatInput} from './input';
 
@@ -22,6 +22,5 @@ import {MatInput} from './input';
     MatFormFieldModule,
     MatInput,
   ],
-  providers: [ErrorStateMatcher],
 })
 export class MatInputModule {}

src/material/stepper/stepper-module.ts

@@ -11,7 +11,7 @@ import {CdkStepperModule} from '@angular/cdk/stepper';
 import {CommonModule} from '@angular/common';
 import {NgModule} from '@angular/core';
 import {MatButtonModule} from '@angular/material/button';
-import {ErrorStateMatcher, MatCommonModule, MatRippleModule} from '@angular/material/core';
+import {MatCommonModule, MatRippleModule} from '@angular/material/core';
 import {MatIconModule} from '@angular/material/icon';
 import {MatStepHeader} from './step-header';
 import {MatStepLabel} from './step-label';
@@ -54,6 +54,6 @@ import {MatStepContent} from './step-content';
     MatStepperIcon,
     MatStepContent,
   ],
-  providers: [MAT_STEPPER_INTL_PROVIDER, ErrorStateMatcher],
+  providers: [MAT_STEPPER_INTL_PROVIDER],
 })
 export class MatStepperModule {}