Componentize sad_tab

chrome/browser/ui/cocoa/browser_window_controller.mm

Index: chrome/browser/ui/cocoa/browser_window_controller.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller.mm b/chrome/browser/ui/cocoa/browser_window_controller.mm
index 4918b476084b52da3aa6da7e64c0edebaf3f0f3a..bfed9cc35c4a4427e25769203b87312a21c053db 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller.mm
@@ -62,7 +62,6 @@
 #import "chrome/browser/ui/cocoa/profiles/avatar_icon_controller.h"
 #import "chrome/browser/ui/cocoa/status_bubble_mac.h"
 #import "chrome/browser/ui/cocoa/tab_contents/overlayable_contents_controller.h"
-#import "chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h"
 #import "chrome/browser/ui/cocoa/tab_contents/tab_contents_controller.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_view.h"
@@ -80,10 +79,11 @@
 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/command.h"
-#include "chrome/common/url_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/grit/locale_settings.h"
 #include "components/bookmarks/browser/bookmark_model.h"
+#import "components/sad_tab/cocoa/sad_tab_controller.h"
+#include "components/sad_tab/url_constants.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/translate/core/browser/translate_manager.h"
 #include "components/translate/core/browser/translate_ui_delegate.h"
@@ -1915,7 +1915,7 @@ using content::WebContents;
     WebContents* webContents = [sadTab webContents];
     if (webContents) {
       OpenURLParams params(
-          GURL(chrome::kCrashReasonURL), Referrer(), CURRENT_TAB,
+          GURL(sad_tab::kCrashReasonURL), Referrer(), CURRENT_TAB,
           ui::PAGE_TRANSITION_LINK, false);
       webContents->OpenURL(params);
     }