Remove IsSecondaryUiMaterial from ash/

This function is being removed and currently always returns true.

Bug: chromium:867557
Change-Id: I6e683990e42a6ad9abb7fe5d9b8cce2f51867c37
Reviewed-on: https://chromium-review.googlesource.com/1166189Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582189}

ash/session/multiprofiles_intro_dialog.cc

@@ -57,8 +57,7 @@ base::string16 MultiprofilesIntroDialog::GetWindowTitle() const {
 }
 
 bool MultiprofilesIntroDialog::ShouldShowCloseButton() const {
-  // Material UI has no [X] in the corner of this dialog.
-  return !ui::MaterialDesignController::IsSecondaryUiMaterial();
+  return false;
 }
 
 gfx::Size MultiprofilesIntroDialog::CalculatePreferredSize() const {

ash/session/session_aborted_dialog.cc

@@ -74,8 +74,7 @@ base::string16 SessionAbortedDialog::GetWindowTitle() const {
 }
 
 bool SessionAbortedDialog::ShouldShowCloseButton() const {
-  // Material UI has no [X] in the corner of this dialog.
-  return !ui::MaterialDesignController::IsSecondaryUiMaterial();
+  return false;
 }
 
 gfx::Size SessionAbortedDialog::CalculatePreferredSize() const {

ash/session/teleport_warning_dialog.cc

@@ -66,8 +66,7 @@ base::string16 TeleportWarningDialog::GetWindowTitle() const {
 }
 
 bool TeleportWarningDialog::ShouldShowCloseButton() const {
-  // Material UI has no [X] in the corner of this dialog.
-  return !ui::MaterialDesignController::IsSecondaryUiMaterial();
+  return false;
 }
 
 gfx::Size TeleportWarningDialog::CalculatePreferredSize() const {

ash/shelf/shelf_tooltip_bubble.cc

@@ -57,8 +57,7 @@ ShelfTooltipBubble::ShelfTooltipBubble(views::View* anchor,
   // Adjust the anchor location for asymmetrical borders of shelf item.
   if (anchor->border())
     insets += anchor->border()->GetInsets();
-  if (ui::MaterialDesignController::IsSecondaryUiMaterial())
-    insets += gfx::Insets(-kBubblePaddingHorizontalBottom);
+  insets += gfx::Insets(-kBubblePaddingHorizontalBottom);
   set_anchor_view_insets(insets);
 
   views::BubbleDialogDelegateView::CreateBubble(this);

ash/system/session/logout_confirmation_dialog.cc

@@ -98,8 +98,7 @@ base::string16 LogoutConfirmationDialog::GetWindowTitle() const {
 }
 
 bool LogoutConfirmationDialog::ShouldShowCloseButton() const {
-  // Material UI has no [X] in the corner of this dialog.
-  return !ui::MaterialDesignController::IsSecondaryUiMaterial();
+  return false;
 }
 
 void LogoutConfirmationDialog::WindowClosing() {