Include a role description string in node info for Android accessibility.

chrome/common/chrome_content_client.h

Index: chrome/common/chrome_content_client.h
diff --git a/chrome/common/chrome_content_client.h b/chrome/common/chrome_content_client.h
index 33515eabfbe98cc527570f093a24db49e4e4f162..c5ebf459859991f17d3a6d1f492a89871f9049c6 100644
--- a/chrome/common/chrome_content_client.h
+++ b/chrome/common/chrome_content_client.h
@@ -65,6 +65,9 @@ class ChromeContentClient : public content::ContentClient {
   std::string GetProduct() const override;
   std::string GetUserAgent() const override;
   base::string16 GetLocalizedString(int message_id) const override;
+  base::string16 GetLocalizedStringF(
+      int message_id,
+      const base::string16& string0) const override;
   base::StringPiece GetDataResource(
       int resource_id,
       ui::ScaleFactor scale_factor) const override;