Rename chip-grid.ts -> chip-set.ts

Author: vanessanschmitt

src/material-experimental/mdc-chips/chip-grid.ts renamed to src/material-experimental/mdc-chips/chip-set.ts

@@ -10,7 +10,7 @@ import {CommonModule} from '@angular/common';
 import {NgModule} from '@angular/core';
 import {MatCommonModule} from '@angular/material/core';
 import {MatChip, MatChipCell, MatChipAvatar, MatChipTrailingIcon} from './chip';
-import {MatChipSet, MatChipGrid} from './chip-grid';
+import {MatChipSet, MatChipGrid} from './chip-set';
 
 @NgModule({
   imports: [MatCommonModule, CommonModule],

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

@@ -7,5 +7,5 @@
  */
 
 export * from './chip';
-export * from './chip-grid';
+export * from './chip-set';
 export * from './module';