Add history icon to page actions menu for AMC mode

Bug: T213352
Change-Id: I6ba11c5969e03bf71fb891558fde68215e978083

includes/skins/SkinMinerva.php

@@ -1158,6 +1158,12 @@ class SkinMinerva extends SkinTemplate {
 			$menu[] = $this->createWatchPageAction( $actions );
 		}
 
+		if (
+			MediaWikiServices::getInstance()->getService( 'MobileFrontend.AMC.UserMode' )->isEnabled()
+		) {
+			$menu[] = $this->getHistoryPageAction( $actions );
+		}
+
 		if ( $this->isAllowedPageAction( 'edit' ) ) {
 			$menu[] = $this->createEditPageAction();
 		}
@@ -1265,6 +1271,22 @@ class SkinMinerva extends SkinTemplate {
 		];
 	}
 
+	/**
+	 * Creates a history action: An icon that links to the mobile history page.
+	 *
+	 * @return array A map of HTML attributes and a 'text' property to be used with the
+	 * pageActionMenu.mustache template.
+	 */
+	protected function getHistoryPageAction() {
+		$baseResult = [
+			'class' => MinervaUI::iconClass( 'clock-gray' ),
+			'text' => $this->msg( 'mobile-frontend-history' ),
+			'href' => $this->getHistoryUrl( $this->getTitle() )
+		];
+
+		return $baseResult;
+	}
+
 	/**
 	 * Checks whether the editor can handle the existing content handler type.
 	 *

resources/skins.minerva.base.styles/pageactions.less

@@ -65,7 +65,8 @@
 	}
 }
 
-// default layout - spacing out the first menu item
+// Layout for less than 5 items - one item at the beginning, rest at the end.
+// |1-----2--3--4|
 .page-actions-menu__list-item:first-child {
 	flex-grow: 1;
 	justify-content: flex-start;