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, 5 insertions, 0 deletions

diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index 5f561c4..96b2caf 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -7,6 +7,8 @@
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
+#include "build/build_config.h"
+
 namespace prefs {
 
 // Profile prefs
@@ -89,6 +91,9 @@ extern const wchar_t kPrintingPageHeaderRight[];
 extern const wchar_t kPrintingPageFooterLeft[];
 extern const wchar_t kPrintingPageFooterCenter[];
 extern const wchar_t kPrintingPageFooterRight[];
+#if defined(OS_LINUX)
+extern const wchar_t kUsesSystemTheme[];
+#endif
 extern const wchar_t kCurrentThemeID[];
 extern const wchar_t kCurrentThemeImages[];
 extern const wchar_t kCurrentThemeColors[];