Remove old-checkbox-style flag, code and assets

ui/resources/ui_resources.grd

Index: ui/resources/ui_resources.grd
diff --git a/ui/resources/ui_resources.grd b/ui/resources/ui_resources.grd
index e36695ae3b23cae2a41c48faf9b8271c7e176b8c..07ae9d37d37e6d3574445b1f2c9cb57bd0db0bbc 100644
--- a/ui/resources/ui_resources.grd
+++ b/ui/resources/ui_resources.grd
@@ -71,23 +71,6 @@
       <structure type="chrome_scaled_image" name="IDR_BUBBLE_TL" file="bubble_top_left.png" />
       <structure type="chrome_scaled_image" name="IDR_BUBBLE_TR" file="bubble_top_right.png" />
       <structure type="chrome_scaled_image" name="IDR_BUBBLE_T_ARROW" file="bubble_pointer_top.png" />
-      <if expr="is_posix and not is_macosx and not pp_ifdef('use_aura')">
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_INDETERMINATE" file="linux/linux-checkbox-disabled-indeterminate.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_OFF" file="linux/linux-checkbox-disabled-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_ON" file="linux/linux-checkbox-disabled-on.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_INDETERMINATE" file="linux/linux-checkbox-indeterminate.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_OFF" file="linux/linux-checkbox-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_ON" file="linux/linux-checkbox-on.png" />
-      </if>
-      <if expr="pp_ifdef('use_aura')">
-        <!-- TODO(jamescook): Replace Linux images with Aura-specific ones. -->
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_INDETERMINATE" file="linux/linux-checkbox-disabled-indeterminate.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_OFF" file="linux/linux-checkbox-disabled-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_DISABLED_ON" file="linux/linux-checkbox-disabled-on.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_INDETERMINATE" file="linux/linux-checkbox-indeterminate.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_OFF" file="linux/linux-checkbox-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_CHECKBOX_ON" file="linux/linux-checkbox-on.png" />
-      </if>
       <structure type="chrome_scaled_image" name="IDR_CHECKMARK" file="common/checkmark.png" />
       <if expr="not pp_ifdef('toolkit_views') and is_posix and not is_macosx">
         <structure type="chrome_scaled_image" name="IDR_CLOSE" file="linux/linux_close.png" />
@@ -185,20 +168,12 @@
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_BORDER_LEFT" file="linux/linux-progress-border-left.png" />
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_BORDER_RIGHT" file="linux/linux-progress-border-right.png" />
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_VALUE" file="linux/linux-progress-value.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_DISABLED_OFF" file="linux/linux-radio-disabled-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_DISABLED_ON" file="linux/linux-radio-disabled-on.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_OFF" file="linux/linux-radio-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_ON" file="linux/linux-radio-on.png" />
       </if>
       <if expr="pp_ifdef('use_aura')">
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_BAR" file="linux/linux-progress-bar.png" />
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_BORDER_LEFT" file="linux/linux-progress-border-left.png" />
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_BORDER_RIGHT" file="linux/linux-progress-border-right.png" />
         <structure type="chrome_scaled_image" name="IDR_PROGRESS_VALUE" file="linux/linux-progress-value.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_DISABLED_OFF" file="linux/linux-radio-disabled-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_DISABLED_ON" file="linux/linux-radio-disabled-on.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_OFF" file="linux/linux-radio-off.png" />
-        <structure type="chrome_scaled_image" name="IDR_RADIO_ON" file="linux/linux-radio-on.png" />
  
         <structure type="chrome_scaled_image" name="IDR_SCROLL_BASE_HORIZONTAL_CENTER_H" file="cros/aura_scrollbar_base_horizontal_hover_center.png" />
         <structure type="chrome_scaled_image" name="IDR_SCROLL_BASE_HORIZONTAL_LEFT_H" file="cros/aura_scrollbar_base_horizontal_hover_left.png" />