Update some secondary UI buttons to MD style.

chrome/browser/ui/views/profiles/profile_chooser_view.cc

Index: chrome/browser/ui/views/profiles/profile_chooser_view.cc
diff --git a/chrome/browser/ui/views/profiles/profile_chooser_view.cc b/chrome/browser/ui/views/profiles/profile_chooser_view.cc
index ba23c02554232f27906667e8e486c22b56d40fc0..7b204a869ebbc02c0581b889713b4c962592f468 100644
--- a/chrome/browser/ui/views/profiles/profile_chooser_view.cc
+++ b/chrome/browser/ui/views/profiles/profile_chooser_view.cc
@@ -46,6 +46,7 @@
 #include "grit/theme_resources.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/clip_recorder.h"
 #include "ui/gfx/canvas.h"
@@ -64,6 +65,7 @@
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/label_button_border.h"
+#include "ui/views/controls/button/md_text_button.h"
 #include "ui/views/controls/button/menu_button.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/link.h"
@@ -1285,9 +1287,14 @@ views::View* ProfileChooserView::CreateTutorialView(
   // Adds links and buttons.
   bool has_button = !button_text.empty();
   if (has_button) {
-    *button = new views::LabelButton(this, button_text);
-    (*button)->SetHorizontalAlignment(gfx::ALIGN_CENTER);
-    (*button)->SetStyle(views::Button::STYLE_BUTTON);
+    if (ui::MaterialDesignController::IsSecondaryUiMaterial()) {

[msw, 2016/05/12 19:17:04]

q: why isn't this needed elsewhere?

[Evan Stade, 2016/05/12 19:32:02]

because the factory in MdTextButton creates the appropriate kind of button based
on this switch. Here I have to do something slightly different for pre-md and
non-md, so I have to use the switch. That said, I've changed this code to also
use that factory because I want to get rid of public uses of SetStyle().

+      *button = views::MdTextButton::CreateMdButton(this, button_text);
+      (*button)->SetEnabledTextColors(SK_ColorWHITE);

[msw, 2016/05/12 19:17:04]

nit: use a theme color?

[Evan Stade, 2016/05/12 19:32:02]

this isn't a surface that can be themed. This white matches the link text color
on L1305. Made them share a const.

+    } else {
+      *button = new views::LabelButton(this, button_text);
+      (*button)->SetStyle(views::Button::STYLE_BUTTON);
+      (*button)->SetHorizontalAlignment(gfx::ALIGN_CENTER);
+    }
   }
 
   bool has_link = !link_text.empty();