Serve "Get Info" command from the toolbar menu button.

TEST=manually tested get-info command enabled for single selection and disabled for multiple selection
TEST=manually tested chrome://histograms records the new way to open QuickView as #2.

Bug: 740842
Change-Id: I3c9d58f7d3877e7b059bb386a56cdc8d4e54a43b
Reviewed-on: https://chromium-review.googlesource.com/571380
Commit-Queue: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Reviewed-by: Naoki Fukino <fukino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486732}

tools/metrics/histograms/enums.xml

@@ -16636,6 +16636,7 @@ uploading your change for review.  These are checked by presubmit scripts.
 <enum name="FileManagerQuickViewWayToOpen">
   <int value="0" label="Context menu"/>
   <int value="1" label="Space key"/>
+  <int value="2" label="Selection menu"/>
 </enum>
 
 <enum name="FileManagerRootType">

ui/file_manager/file_manager/foreground/js/file_manager.js

@@ -590,10 +590,10 @@ FileManager.prototype = /** @struct */ {
         this.metadataModel_, this.quickViewModel_, this.fileMetadataFormatter_);
     this.quickViewController_ = new QuickViewController(
         assert(this.metadataModel_), assert(this.selectionHandler_),
-        assert(this.ui_.listContainer), assert(this.quickViewModel_),
-        assert(this.taskController_), fileListSelectionModel,
-        assert(this.quickViewUma_), metadataBoxController, this.dialogType,
-        assert(this.volumeManager_));
+        assert(this.ui_.listContainer), assert(this.ui_.selectionMenuButton),
+        assert(this.quickViewModel_), assert(this.taskController_),
+        fileListSelectionModel, assert(this.quickViewUma_),
+        metadataBoxController, this.dialogType, assert(this.volumeManager_));
 
     if (this.dialogType === DialogType.FULL_PAGE) {
       importer.importEnabled().then(

ui/file_manager/file_manager/foreground/js/file_manager_commands.js

@@ -1080,7 +1080,8 @@ CommandHandler.COMMANDS_['get-info'] = /** @type {Command} */ ({
    * @param {!CommandHandlerDeps} fileManager CommandHandlerDeps to use.
    */
   canExecute: function(event, fileManager) {
-    var entries = CommandUtil.getCommandEntries(event.target);
+    // QuickViewModel refers the file selection instead of event target.
+    var entries = fileManager.getSelection().entries;
     if (entries.length === 0) {
       event.canExecute = false;
       event.command.setHidden(true);

ui/file_manager/file_manager/foreground/js/quick_view_controller.js

@@ -9,6 +9,7 @@
  * @param {!MetadataModel} metadataModel File system metadata.
  * @param {!FileSelectionHandler} selectionHandler
  * @param {!ListContainer} listContainer
+ * @param {!cr.ui.MenuButton} selectionMenuButton
  * @param {!QuickViewModel} quickViewModel
  * @param {!TaskController} taskController
  * @param {!cr.ui.ListSelectionModel} fileListSelectionModel
@@ -20,8 +21,8 @@
  * @constructor
  */
 function QuickViewController(
-    metadataModel, selectionHandler, listContainer, quickViewModel,
-    taskController, fileListSelectionModel, quickViewUma,
+    metadataModel, selectionHandler, listContainer, selectionMenuButton,
+    quickViewModel, taskController, fileListSelectionModel, quickViewUma,
     metadataBoxController, dialogType, volumeManager) {
   /**
    * @type {FilesQuickView}
@@ -103,9 +104,13 @@ function QuickViewController(
   this.listContainer_.element.addEventListener(
       'keydown', this.onKeyDownToOpen_.bind(this));
   this.listContainer_.element.addEventListener('command', function(event) {
-    if(event.command.id === 'get-info')
+    if (event.command.id === 'get-info')
       this.display_(QuickViewUma.WayToOpen.CONTEXT_MENU);
   }.bind(this));
+  selectionMenuButton.addEventListener('command', function(event) {
+    if (event.command.id === 'get-info')
+      this.display_(QuickViewUma.WayToOpen.SELECTION_MENU);
+  }.bind(this));
 }
 
 /**

ui/file_manager/file_manager/foreground/js/quick_view_uma.js

@@ -32,6 +32,7 @@ function QuickViewUma(volumeManager, dialogType) {
 QuickViewUma.WayToOpen = {
   CONTEXT_MENU: 'contextMenu',
   SPACE_KEY: 'spaceKey',
+  SELECTION_MENU: 'selectionMenu',
 };
 
 /**
@@ -43,6 +44,7 @@ QuickViewUma.WayToOpen = {
 QuickViewUma.WayToOpenValues_ = [
   QuickViewUma.WayToOpen.CONTEXT_MENU,
   QuickViewUma.WayToOpen.SPACE_KEY,
+  QuickViewUma.WayToOpen.SELECTION_MENU,
 ];
 
 /**