[cros] Fix UI issues on SignIn pod.

chrome/browser/chromeos/login/guest_user_view.cc

Index: chrome/browser/chromeos/login/guest_user_view.cc
diff --git a/chrome/browser/chromeos/login/guest_user_view.cc b/chrome/browser/chromeos/login/guest_user_view.cc
index c26db80980d3af85d7ff795c6cebb2ba6dfa46e4..44dac3b22bd63fc400fe087e91a2c7162d616752 100644
--- a/chrome/browser/chromeos/login/guest_user_view.cc
+++ b/chrome/browser/chromeos/login/guest_user_view.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/chromeos/login/guest_user_view.h"
 
 #include "app/l10n_util.h"
+#include "chrome/browser/chromeos/login/helper.h"
 #include "chrome/browser/chromeos/login/user_controller.h"
 #include "chrome/browser/chromeos/login/wizard_accessibility_helper.h"
 #include "grit/generated_resources.h"
@@ -64,6 +65,7 @@ void GuestUserView::RecreateFields() {
   submit_button_ = new UserEntryButton(
       user_controller_,
       l10n_util::GetString(IDS_LOGIN_BUTTON));
+  login::CorrectNativeButtonFontSize(submit_button_);
   AddChildView(submit_button_);
   Layout();
   SchedulePaint();
@@ -102,11 +104,13 @@ void GuestUserView::OnLocaleChanged() {
 
 void GuestUserView::Layout() {
   gfx::Size submit_button_size = submit_button_->GetPreferredSize();
-  int submit_button_x = (width() - submit_button_size.width()) / 2;
+  int submit_button_width = std::max(login::kButtonMinWidth,
+                                     submit_button_size.width());
+  int submit_button_x = (width() - submit_button_width) / 2;
   int submit_button_y = (height() - submit_button_size.height()) / 2;
   submit_button_->SetBounds(submit_button_x,
                             submit_button_y,
-                            submit_button_size.width(),
+                            submit_button_width,
                             submit_button_size.height());
 }