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

blimp/engine/common/blimp_content_client.h

Index: blimp/engine/common/blimp_content_client.h
diff --git a/blimp/engine/common/blimp_content_client.h b/blimp/engine/common/blimp_content_client.h
index 8826a62e0dd3e99d6ccd26e18d60b8c9c9ad019a..ff8f5b6a77a710e098821b2116aec76c2c3f57da 100644
--- a/blimp/engine/common/blimp_content_client.h
+++ b/blimp/engine/common/blimp_content_client.h
@@ -21,6 +21,9 @@ class BlimpContentClient : public content::ContentClient {
   // content::ContentClient implementation.
   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;