chrome/settings: Implement the 'get themes' button.

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

Index: chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
diff --git a/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc b/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
index f02e8ce02334dea5f1645d0f4d39d2104f357186..8797961e6dd609d0ecd152e270db6e884a5efc69 100644
--- a/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
+++ b/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.h"
 
 #include "chrome/grit/generated_resources.h"
+#include "chrome/grit/locale_settings.h"
 #include "content/public/browser/web_ui_data_source.h"
 
 namespace {
@@ -91,6 +92,8 @@ void AddAppearanceStrings(content::WebUIDataSource* html_source) {
       "homePageNtp", IDS_SETTINGS_HOME_PAGE_NTP);
   html_source->AddLocalizedString(
       "changeHomePage", IDS_SETTINGS_CHANGE_HOME_PAGE);
+  html_source->AddLocalizedString(
+      "themesGalleryUrl", IDS_THEMES_GALLERY_URL);

[Jeremy Klein, 2015/06/05 04:39:25]

Should we pull this theme into our own grd? Not sure we should rely on
chrome/app/resources/locale_settings.grd

[James Hawkins, 2015/06/05 15:28:23]

What is your concern with that dependency?

locale_settings.grd is the place for strings that depend on the current locale. 
It gets worked over by grit into local_settings_[all locales].grd.  I suppose
technically we could create our own .grd for this purpose (including the gn-foo
to generate all of the locale-specific files), but then we'd have two copies of
the same URL (the other being for options, which I'm not a fan of.  Having all
locale-specific strings in one file seems to be the convention, and I prefer to
stick with that unless it becomes an issue.

[Jeremy Klein, 2015/06/05 16:23:27]

SGTM, I just wasn't sure how that file was used.

 }
 
 void AddCommonStrings(content::WebUIDataSource* html_source) {