Remove details panel.

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

Index: ui/file_manager/file_manager/foreground/js/main_window_component.js
diff --git a/ui/file_manager/file_manager/foreground/js/main_window_component.js b/ui/file_manager/file_manager/foreground/js/main_window_component.js
index ae1a11d326a1bfa05699de943269799b10a6c762..10aa8d0b3d35906bcce9ed011e824fc7f30c20b4 100644
--- a/ui/file_manager/file_manager/foreground/js/main_window_component.js
+++ b/ui/file_manager/file_manager/foreground/js/main_window_component.js
@@ -124,8 +124,6 @@ function MainWindowComponent(
       'pathclick', this.onBreadcrumbClick_.bind(this));
   ui.toggleViewButton.addEventListener(
       'click', this.onToggleViewButtonClick_.bind(this));
-  ui.detailsButton.addEventListener(
-      'click', this.onDetailsButtonClick_.bind(this));
   directoryModel.addEventListener(
       'directory-changed', this.onDirectoryChanged_.bind(this));
   volumeManager.addEventListener(
@@ -134,8 +132,6 @@ function MainWindowComponent(
   this.onDriveConnectionChanged_();
   document.addEventListener('keydown', this.onKeyDown_.bind(this));
   document.addEventListener('keyup', this.onKeyUp_.bind(this));
-  selectionHandler.addEventListener('change',
-      this.onFileSelectionChanged_.bind(this));
 }
 
 /**
@@ -163,17 +159,6 @@ MainWindowComponent.prototype.onFileListFocus_ = function() {
 };
 
 /**
- * Handles file selection event.
- *
- * @private
- */
-MainWindowComponent.prototype.onFileSelectionChanged_ = function(event) {
-  if (this.ui_.detailsContainer) {
-    this.ui_.detailsContainer.onFileSelectionChanged(event);
-  }
-};
-
-/**
  * Handles mouse click or tap.
  *
  * @param {Event} event The click event.
@@ -251,18 +236,6 @@ MainWindowComponent.prototype.onToggleViewButtonClick_ = function(event) {
 };
 
 /**
- * Handles click event on the toggle-view button.
- * @param {Event} event Click event.
- * @private
- */
-MainWindowComponent.prototype.onDetailsButtonClick_ = function(event) {
-  var visible = this.ui_.detailsContainer.visible;
-  this.ui_.setDetailsVisibility(!visible);
-  this.appStateController_.saveViewOptions();
-  this.ui_.listContainer.focus();
-};
-
-/**
  * KeyDown event handler for the document.
  * @param {Event} event Key event.
  * @private