refactor(grid-list): remove unnecessary coercion functions

src/lib/grid-list/BUILD.bazel

@@ -11,6 +11,7 @@ ng_module(
   deps = [
     "//src/lib/core",
     "//src/cdk/bidi",
+    "//src/cdk/coercion",
   ],
   tsconfig = "//src/lib:tsconfig-build.json",
 )

src/lib/grid-list/grid-list.ts

@@ -22,10 +22,7 @@ import {MatGridTile} from './grid-tile';
 import {TileCoordinator} from './tile-coordinator';
 import {TileStyler, FitTileStyler, RatioTileStyler, FixedTileStyler} from './tile-styler';
 import {Directionality} from '@angular/cdk/bidi';
-import {
-  coerceToString,
-  coerceToNumber,
-} from './grid-list-measure';
+import {coerceNumberProperty} from '@angular/cdk/coercion';
 
 
 // TODO(kara): Conditional (responsive) column count / row size.
@@ -72,17 +69,17 @@ export class MatGridList implements OnInit, AfterContentChecked {
   /** Amount of columns in the grid list. */
   @Input()
   get cols(): number { return this._cols; }
-  set cols(value: number) { this._cols = coerceToNumber(value); }
+  set cols(value: number) { this._cols = Math.round(coerceNumberProperty(value)); }
 
   /** Size of the grid list's gutter in pixels. */
   @Input()
   get gutterSize(): string { return this._gutter; }
-  set gutterSize(value: string) { this._gutter = coerceToString(value); }
+  set gutterSize(value: string) { this._gutter = `${value || ''}`; }
 
   /** Set internal representation of row height from the user-provided value. */
   @Input()
   set rowHeight(value: string | number) {
-    const newValue = coerceToString(value);
+    const newValue = `${value || ''}`;
 
     if (newValue !== this._rowHeight) {
       this._rowHeight = newValue;

src/lib/grid-list/grid-tile.ts

@@ -18,7 +18,7 @@ import {
   ChangeDetectionStrategy,
 } from '@angular/core';
 import {MatLine, MatLineSetter} from '@angular/material/core';
-import {coerceToNumber} from './grid-list-measure';
+import {coerceNumberProperty} from '@angular/cdk/coercion';
 
 @Component({
   moduleId: module.id,
@@ -41,12 +41,12 @@ export class MatGridTile {
   /** Amount of rows that the grid tile takes up. */
   @Input()
   get rowspan(): number { return this._rowspan; }
-  set rowspan(value: number) { this._rowspan = coerceToNumber(value); }
+  set rowspan(value: number) { this._rowspan = Math.round(coerceNumberProperty(value)); }
 
   /** Amount of columns that the grid tile takes up. */
   @Input()
   get colspan(): number { return this._colspan; }
-  set colspan(value: number) { this._colspan = coerceToNumber(value); }
+  set colspan(value: number) { this._colspan = Math.round(coerceNumberProperty(value)); }
 
   /**
    * Sets the style of the grid-tile element.  Needs to be set manually to avoid