Support "learn more" link for EME in PermissionRequestManager code-path on Android

chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc

Index: chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
diff --git a/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc b/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
index fa742519a5b9aec29dd9cc88e0a02b56b6b04fd8..2f9793057813fc38d53d0997d03ae10f004bc4f7 100644
--- a/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
+++ b/chrome/browser/permissions/grouped_permission_infobar_delegate_android.cc
@@ -88,6 +88,10 @@ void GroupedPermissionInfoBarDelegate::InfoBarDismissed() {
     permission_prompt_->Closing();
 }
 
+base::string16 GroupedPermissionInfoBarDelegate::GetLinkText() const {
+  return permission_prompt_->GetLinkText();
+}
+
 GroupedPermissionInfoBarDelegate::GroupedPermissionInfoBarDelegate(
     PermissionPromptAndroid* permission_prompt,
     const GURL& requesting_origin)
@@ -126,6 +130,10 @@ base::string16 GroupedPermissionInfoBarDelegate::GetButtonLabel(
                                                          : IDS_PERMISSION_DENY);
 }
 
+GURL GroupedPermissionInfoBarDelegate::GetLinkURL() const {
+  return permission_prompt_->GetLinkURL();
+}
+
 bool GroupedPermissionInfoBarDelegate::EqualsDelegate(
     infobars::InfoBarDelegate* delegate) const {
   // The PermissionRequestManager doesn't create duplicate infobars so a pointer