GTK: Initial implementation of using GTK themes, partially based on evan's CL 118358.

A lot of stuff works:
- Colors are picked out of the GTK theme.
- Buttons use the current GTK button theme.
- We use the user's icon theme.

A lot of stuff doesn't:
- We could do a better job of picking colors for the skylines.
- The omnibox hasn't been touched.
- UI that's not part of the toolbar hasn't been touched.
- We currently fail on themes like HighContrastInverse.

TEST=Under Options>Personal Stuff, click GTK Theme. Colors and widgets should be rendered with the current GTK theme stuff.
TEST=With chrome open and in GTK Theme mode, change your GTK theme or icon theme. chrome should pick up on the change immediately and reimport the colors and images.
http://crbug.com/13967

Review URL: http://codereview.chromium.org/150176

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19868 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 0 deletions

diff --git a/chrome/browser/gtk/options/content_page_gtk.h b/chrome/browser/gtk/options/content_page_gtk.h
index 95b044e0..17f58e4 100644
--- a/chrome/browser/gtk/options/content_page_gtk.h
+++ b/chrome/browser/gtk/options/content_page_gtk.h
@@ -37,6 +37,10 @@ class ContentPageGtk : public OptionsPageBase {
   static void OnClearBrowsingDataButtonClicked(GtkButton* widget,
                                                ContentPageGtk* page);
 
+  // Callback for the GTK theme button.
+  static void OnGtkThemeButtonClicked(GtkButton* widget,
+                                      ContentPageGtk* page);
+
   // Callback for reset default theme button.
   static void OnResetDefaultThemeButtonClicked(GtkButton* widget,
                                                ContentPageGtk* page);