Retire IDC_LOAD_NEW_TAB_PAGE

Command id IDC_LOAD_NEW_TAB_PAGE is no longer used.

Change-Id: Ia6746b248845863ff3f2f3bf57b60aafc10fbcec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1868567
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707871}

chrome/app/chrome_command_ids.h

@@ -25,7 +25,6 @@
 #define IDC_OPEN_CURRENT_URL            33004
 #define IDC_STOP                        33006
 #define IDC_RELOAD_BYPASSING_CACHE      33007
-#define IDC_LOAD_NEW_TAB_PAGE           33008
 #define IDC_RELOAD_CLEARING_CACHE       33009
 
 // Window management commands

chrome/browser/ui/views/toolbar/toolbar_view.cc

@@ -146,7 +146,6 @@ ToolbarView::ToolbarView(Browser* browser, BrowserView* browser_view)
   chrome::AddCommandObserver(browser_, IDC_RELOAD, this);
   chrome::AddCommandObserver(browser_, IDC_HOME, this);
   chrome::AddCommandObserver(browser_, IDC_SHOW_AVATAR_MENU, this);
-  chrome::AddCommandObserver(browser_, IDC_LOAD_NEW_TAB_PAGE, this);
 
   UpgradeDetector::GetInstance()->AddObserver(this);
   md_observer_.Add(ui::MaterialDesignController::GetInstance());
@@ -163,7 +162,6 @@ ToolbarView::~ToolbarView() {
   chrome::RemoveCommandObserver(browser_, IDC_RELOAD, this);
   chrome::RemoveCommandObserver(browser_, IDC_HOME, this);
   chrome::RemoveCommandObserver(browser_, IDC_SHOW_AVATAR_MENU, this);
-  chrome::RemoveCommandObserver(browser_, IDC_LOAD_NEW_TAB_PAGE, this);
 }
 
 void ToolbarView::Init() {