refactor(aio): rename CustomMdIconRegistry to CustomIconRegistry (angular#19702)

The change of Angular Material version means that the `md` prefix is
no longer appropriate.

PR Close angular#19702

Author: petebacondarwin

aio/src/app/app.module.ts

@@ -29,7 +29,7 @@ import { SwUpdatesModule } from 'app/sw-updates/sw-updates.module';
 
 import { AppComponent } from 'app/app.component';
 import { ApiService } from 'app/embedded/api/api.service';
-import { CustomMdIconRegistry, SVG_ICONS } from 'app/shared/custom-md-icon-registry';
+import { CustomIconRegistry, SVG_ICONS } from 'app/shared/custom-icon-registry';
 import { Deployment } from 'app/shared/deployment.service';
 import { DocViewerComponent } from 'app/layout/doc-viewer/doc-viewer.component';
 import { DtComponent } from 'app/layout/doc-viewer/dt.component';
@@ -111,7 +111,7 @@ export const svgIconProviders = [
     Location,
     { provide: LocationStrategy, useClass: PathLocationStrategy },
     LocationService,
-    { provide: MatIconRegistry, useClass: CustomMdIconRegistry },
+    { provide: MatIconRegistry, useClass: CustomIconRegistry },
     NavigationService,
     Platform,
     ScrollService,

aio/src/app/shared/custom-md-icon-registry.spec.ts renamed to aio/src/app/shared/custom-icon-registry.spec.ts

@@ -1,7 +1,7 @@
 import { MatIconRegistry } from '@angular/material';
-import { CustomMdIconRegistry, SvgIconInfo } from './custom-md-icon-registry';
+import { CustomIconRegistry, SvgIconInfo } from './custom-icon-registry';
 
-describe('CustomMdIconRegistry', () => {
+describe('CustomIconRegistry', () => {
   it('should get the SVG element for a preloaded icon from the cache', () => {
     const mockHttp: any = {};
     const mockSanitizer: any = {};
@@ -10,7 +10,7 @@ describe('CustomMdIconRegistry', () => {
     const svgIcons: SvgIconInfo[] = [
       { name: 'test_icon', svgSource: svgSrc }
     ];
-    const registry = new CustomMdIconRegistry(mockHttp, mockSanitizer, svgIcons);
+    const registry = new CustomIconRegistry(mockHttp, mockSanitizer, svgIcons);
     let svgElement: SVGElement;
     registry.getNamedSvgIcon('test_icon').subscribe(el => svgElement = el);
     expect(svgElement).toEqual(createSvg(svgSrc));
@@ -26,7 +26,7 @@ describe('CustomMdIconRegistry', () => {
     ];
     spyOn(MatIconRegistry.prototype, 'getNamedSvgIcon');
 
-    const registry = new CustomMdIconRegistry(mockHttp, mockSanitizer, svgIcons);
+    const registry = new CustomIconRegistry(mockHttp, mockSanitizer, svgIcons);
 
     registry.getNamedSvgIcon('other_icon');
     expect(MatIconRegistry.prototype.getNamedSvgIcon).toHaveBeenCalledWith('other_icon', undefined);

aio/src/app/shared/custom-md-icon-registry.ts renamed to aio/src/app/shared/custom-icon-registry.ts

@@ -6,7 +6,7 @@ import { DomSanitizer } from '@angular/platform-browser';
 
 /**
  * Use SVG_ICONS (and SvgIconInfo) as "multi" providers to provide the SVG source
- * code for the icons that you wish to have preloaded in the `CustomMdIconRegistry`
+ * code for the icons that you wish to have preloaded in the `CustomIconRegistry`
  * For compatibility with the MdIconComponent, please ensure that the SVG source has
  * the following attributes:
  *
@@ -45,7 +45,7 @@ function createFakeHttp(http: HttpClient): any {
  * us to provide preloaded icon SVG sources.
  */
 @Injectable()
-export class CustomMdIconRegistry extends MatIconRegistry {
+export class CustomIconRegistry extends MatIconRegistry {
   private preloadedSvgElements: SvgIconMap = {};
 
   constructor(http: HttpClient, sanitizer: DomSanitizer, @Inject(SVG_ICONS) svgIcons: SvgIconInfo[]) {