views::LabelButton should not call virtual methods from its constructor

ui/views/controls/button/label_button.cc

Index: ui/views/controls/button/label_button.cc
diff --git a/ui/views/controls/button/label_button.cc b/ui/views/controls/button/label_button.cc
index ee72e83bd6153321e93688f17804ae72f10813aa..347d2d755f9e1e0a565c661e73a5e780a701b4d5 100644
--- a/ui/views/controls/button/label_button.cc
+++ b/ui/views/controls/button/label_button.cc
@@ -59,7 +59,7 @@ const int LabelButton::kHoverAnimationDurationMs = 170;
 // static
 const char LabelButton::kViewClassName[] = "LabelButton";
 
-LabelButton::LabelButton(ButtonListener* listener, const base::string16& text)
+LabelButton::LabelButton(ButtonListener* listener)
     : CustomButton(listener),
       image_(new ImageView()),
       label_(new Label()),
@@ -69,11 +69,10 @@ LabelButton::LabelButton(ButtonListener* listener, const base::string16& text)
       button_state_colors_(),
       explicitly_set_colors_(),
       is_default_(false),
-      style_(STYLE_TEXTBUTTON),
+      style_(STYLE_COUNT),  // Something invalid to ensure Init() is called.
       border_is_themed_border_(true),
       image_label_spacing_(kSpacing) {
   SetAnimationDuration(kHoverAnimationDurationMs);
-  SetText(text);
 
   AddChildView(image_);
   image_->set_interactive(false);
@@ -82,14 +81,25 @@ LabelButton::LabelButton(ButtonListener* listener, const base::string16& text)
   label_->SetFontList(cached_normal_font_list_);
   label_->SetAutoColorReadabilityEnabled(false);
   label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+}
 
-  // Initialize the colors, border, and layout.
-  SetStyle(style_);
+LabelButton::LabelButton(ButtonListener* listener, const base::string16& text)
+    : LabelButton(listener) {
+  InitAsTextbutton(text);
+}
 
-  SetAccessibleName(text);
+LabelButton::~LabelButton() {
 }
 
-LabelButton::~LabelButton() {}
+void LabelButton::InitAsTextbutton(const base::string16& text) {
+  SetText(text);
+  SetStyle(STYLE_TEXTBUTTON);
+}
+
+void LabelButton::InitAsButton(const base::string16& text) {
+  SetText(text);
+  SetStyle(STYLE_BUTTON);
+}
 
 const gfx::ImageSkia& LabelButton::GetImage(ButtonState for_state) {
   if (for_state != STATE_NORMAL && button_state_images_[for_state].isNull())
@@ -356,6 +366,7 @@ gfx::Rect LabelButton::GetChildAreaBounds() {
 }
 
 void LabelButton::OnPaint(gfx::Canvas* canvas) {
+  DCHECK_NE(STYLE_COUNT, style_) << "LabelButton::Init() not called.";
   View::OnPaint(canvas);
   Painter::PaintFocusPainter(this, canvas, focus_painter_.get());
 }