Remove "Alternate frame caption button style" command line flag

ash/frame/caption_buttons/frame_caption_button_container_view.cc

Index: ash/frame/caption_buttons/frame_caption_button_container_view.cc
diff --git a/ash/frame/caption_buttons/frame_caption_button_container_view.cc b/ash/frame/caption_buttons/frame_caption_button_container_view.cc
index f533f14a8119b6f39ed57c5bdb777ce7c71ad084..21385346de44da78b74efc9048197d24abd4b56e 100644
--- a/ash/frame/caption_buttons/frame_caption_button_container_view.cc
+++ b/ash/frame/caption_buttons/frame_caption_button_container_view.cc
@@ -9,7 +9,6 @@
 #include "ash/ash_switches.h"
 #include "ash/frame/caption_buttons/alternate_frame_size_button.h"
 #include "ash/frame/caption_buttons/frame_caption_button.h"
-#include "ash/frame/caption_buttons/frame_maximize_button.h"
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
 #include "grit/ui_strings.h"  // Accessibility names
@@ -48,23 +47,14 @@ FrameCaptionButtonContainerView::FrameCaptionButtonContainerView(
       minimize_button_(NULL),
       size_button_(NULL),
       close_button_(NULL) {
-  bool alternate_style = switches::UseAlternateFrameCaptionButtonStyle();
-
   // Insert the buttons left to right.
   minimize_button_ = new FrameCaptionButton(this, CAPTION_BUTTON_ICON_MINIMIZE);
   minimize_button_->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_APP_ACCNAME_MINIMIZE));
-  // Hide |minimize_button_| when using the non-alternate button style because
-  // |size_button_| is capable of minimizing in this case.
-  minimize_button_->SetVisible(
-      minimize_allowed == MINIMIZE_ALLOWED &&
-      (alternate_style || !frame_->widget_delegate()->CanMaximize()));
+  minimize_button_->SetVisible(minimize_allowed == MINIMIZE_ALLOWED);
   AddChildView(minimize_button_);
 
-  if (alternate_style)
-    size_button_ = new AlternateFrameSizeButton(this, frame, this);
-  else
-    size_button_ = new FrameMaximizeButton(this, frame);
+  size_button_ = new AlternateFrameSizeButton(this, frame, this);

[flackr, 2014/05/06 00:08:31]

At some point AlternateFrameX* should probably become FrameX*.

   size_button_->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_APP_ACCNAME_MAXIMIZE));
   UpdateSizeButtonVisibility(false);
@@ -79,12 +69,6 @@ FrameCaptionButtonContainerView::FrameCaptionButtonContainerView(
 FrameCaptionButtonContainerView::~FrameCaptionButtonContainerView() {
 }
 
-FrameMaximizeButton*
-FrameCaptionButtonContainerView::GetOldStyleSizeButton() {
-  return switches::UseAlternateFrameCaptionButtonStyle() ?
-      NULL : static_cast<FrameMaximizeButton*>(size_button_);
-}
-
 void FrameCaptionButtonContainerView::SetButtonImages(
     CaptionButtonIcon icon,
     int icon_image_id,