Copy chrome/app/theme (x) close images to ui/resources.

Add ui/resources/default_[1|2]00_percent/close_dialog*.png
(copied from chrome/app/theme/default_[1|2]00_percent/web_ui_close*.png)
(these are the most up-to-date image that we want to use)
Add IDR_CLOSE_DIALOG[_H|_P] to ui_resources.grd

TODO(followup): Remove IDR_WEB_UI_CLOSE* and images, use IDR_CLOSE_DIALOG*.
(that will depend on WIP CL https://codereview.chromium.org/11830002)

BUG=166075
TEST=NONE
R=sky@chromium.org

Review URL: https://codereview.chromium.org/11785037

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175862 0039d316-1c4b-4281-b951-d872f2087c98

ui/resources/ui_resources.grd

@@ -92,6 +92,9 @@
       <structure type="chrome_scaled_image" name="IDR_CLOSE_BAR_H" file="close_bar_hover.png" />
       <structure type="chrome_scaled_image" name="IDR_CLOSE_BAR_MASK" file="close_bar_mask.png" />
       <structure type="chrome_scaled_image" name="IDR_CLOSE_BAR_P" file="close_bar_pressed.png" />
+      <structure type="chrome_scaled_image" name="IDR_CLOSE_DIALOG" file="close_dialog.png" />
+      <structure type="chrome_scaled_image" name="IDR_CLOSE_DIALOG_H" file="close_dialog_hover.png" />
+      <structure type="chrome_scaled_image" name="IDR_CLOSE_DIALOG_P" file="close_dialog_pressed.png" />
       <if expr="not pp_ifdef('toolkit_views') and is_posix and not is_macosx">
         <structure type="chrome_scaled_image" name="IDR_CLOSE_H" file="linux_close_hover.png" />
         <structure type="chrome_scaled_image" name="IDR_CLOSE_P" file="linux_close_pressed.png" />