Make the ENABLE_APP_LIST build flag work on Linux

chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc

Index: chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc
diff --git a/chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc b/chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc
index 050de03cfdc3b06845411a3b70cc10cdb1ba1955..3462ce3e8b9c4f60d8d5ae27e77e91e124fd0d1c 100644
--- a/chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc
+++ b/chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.cc
@@ -5,7 +5,6 @@
 #include "chrome/browser/ui/views/apps/app_info_dialog/app_info_footer_panel.h"
 
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ -22,6 +21,10 @@
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
+#if defined(ENABLE_APP_LIST)
+#include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
+#endif
+
 #if defined(USE_ASH)
 #include "ash/shelf/shelf_delegate.h"
 #include "ash/shell.h"
@@ -60,6 +63,7 @@ void AppInfoFooterPanel::CreateButtons() {
     create_shortcuts_button_->SetStyle(views::Button::STYLE_BUTTON);
   }
 
+#if defined(ENABLE_APP_LIST)

[Matt Giuca, 2016/02/29 02:52:37]

Why is this app-list specific? This is controls whether the apps are pinned to
the Ash shelf. It should be available even if app list is disabled (despite the
name of those enums).

   if (CanSetPinnedToShelf()) {
     pin_to_shelf_button_ = new views::LabelButton(
         this, l10n_util::GetStringUTF16(IDS_APP_LIST_CONTEXT_MENU_PIN));
@@ -68,6 +72,7 @@ void AppInfoFooterPanel::CreateButtons() {
         this, l10n_util::GetStringUTF16(IDS_APP_LIST_CONTEXT_MENU_UNPIN));
     unpin_from_shelf_button_->SetStyle(views::Button::STYLE_BUTTON);
   }
+#endif
 
   if (CanUninstallApp()) {
     remove_button_ = new views::LabelButton(