refactor: remove css transform utility (#9571)

The applyCssTransform utility is no longer necessary since none of the browser we support need a prefix.

This is a resubmit of #6938.

Author: crisbeto

src/lib/core/public-api.ts

@@ -17,7 +17,6 @@ export * from './option/index';
 export * from './label/label-options';
 export * from './ripple/index';
 export * from './selection/index';
-export * from './style/index';
 
 /**
  * @deprecated

src/lib/core/style/apply-transform.ts

@@ -26,7 +26,6 @@ import {
 } from '@angular/core';
 import {ControlValueAccessor, NG_VALUE_ACCESSOR} from '@angular/forms';
 import {
-  applyCssTransform,
   CanColor,
   CanDisable,
   CanDisableRipple,
@@ -340,7 +339,7 @@ class SlideToggleRenderer {
     this._thumbEl.classList.remove('mat-dragging');
 
     // Reset the transform because the component will take care of the thumb position after drag.
-    applyCssTransform(this._thumbEl, '');
+    this._thumbEl.style.transform = '';
 
     return this.dragPercentage > 50;
   }
@@ -350,7 +349,7 @@ class SlideToggleRenderer {
     this.dragPercentage = this._getDragPercentage(distance);
     // Calculate the moved distance based on the thumb bar width.
     const dragX = (this.dragPercentage / 100) * this._thumbBarWidth;
-    applyCssTransform(this._thumbEl, `translate3d(${dragX}px, 0, 0)`);
+    this._thumbEl.style.transform = `translate3d(${dragX}px, 0, 0)`;
   }
 
   /** Retrieves the percentage of thumb from the moved distance. Percentage as fraction of 100. */