fix(AgmMarker): match Marker iconUrl input type to native api

allow AgmMarker `iconUrl` to be a GoogleSymbol or an Icon type.

fixes: #1740
fixes: #1622
fixes: #1580
probably fixes a bunch more, since this was often requested.

Author: darron1217

packages/core/directives/marker.ts

@@ -72,7 +72,7 @@ export class AgmMarker implements OnDestroy, OnChanges, AfterContentInit, FitBou
   /**
    * Icon (the URL of the image) for the foreground.
    */
-  @Input() iconUrl: string;
+  @Input() iconUrl: string | mapTypes.MarkerIcon | mapTypes.GoogleSymbol;
 
   /**
    * If true, the marker is visible

packages/core/map-types.ts

@@ -10,6 +10,7 @@ export {
   LatLngLiteral,
   PolyMouseEvent,
   MarkerLabel,
+  MarkerIcon,
   Geocoder,
   GeocoderAddressComponent,
   GeocoderComponentRestrictions,
@@ -42,6 +43,7 @@ export {
   RectangleOptions,
   Marker,
   MarkerOptions,
+  GoogleSymbol,
 } from './services/google-maps-types';
 
 /**

packages/core/services/google-maps-types.ts

@@ -51,7 +51,7 @@ export interface Marker extends MVCObject {
   setTitle(title: string): void;
   setLabel(label: string | MarkerLabel): void;
   setDraggable(draggable: boolean): void;
-  setIcon(icon: string): void;
+  setIcon(icon: string | MarkerIcon | GoogleSymbol): void;
   setOpacity(opacity: number): void;
   setVisible(visible: boolean): void;
   setZIndex(zIndex: number): void;
@@ -66,7 +66,7 @@ export interface MarkerOptions {
   map?: GoogleMap;
   label?: string | MarkerLabel;
   draggable?: boolean;
-  icon?: string;
+  icon?: string | MarkerIcon | GoogleSymbol;
   opacity?: number;
   visible?: boolean;
   zIndex?: number;
@@ -82,6 +82,15 @@ export interface MarkerLabel {
   text: string;
 }
 
+export interface MarkerIcon {
+  anchor?: Point;
+  labelOrigin?: Point;
+  origin?: Point;
+  scaledSize?: Size;
+  size?: Size;
+  url: string;
+}
+
 export interface Circle extends MVCObject {
   getBounds(): LatLngBounds;
   getCenter(): LatLng;