Adds "Certificate Information" label for page_info_model.

chrome/browser/page_info_model.cc

Index: chrome/browser/page_info_model.cc
diff --git a/chrome/browser/page_info_model.cc b/chrome/browser/page_info_model.cc
index 78ba9d28a178e7edc23b0ada89911e07a1e221dc..a66597577c1face49dad2d0d8573eafaeba3a002 100644
--- a/chrome/browser/page_info_model.cc
+++ b/chrome/browser/page_info_model.cc
@@ -287,6 +287,11 @@ PageInfoModel::PageInfoModel(Profile* profile,
         base::Bind(&PageInfoModel::OnGotVisitCountToHost,
                    base::Unretained(this)));
   }
+
+  if (ssl.cert_id) {
+    certificate_label_ = l10n_util::GetStringUTF16(
+        IDS_PAGEINFO_CERT_INFO_BUTTON);
+  }
 }
 
 PageInfoModel::~PageInfoModel() {}
@@ -344,6 +349,10 @@ void PageInfoModel::OnGotVisitCountToHost(HistoryService::Handle handle,
   observer_->OnPageInfoModelChanged();
 }
 
+string16 PageInfoModel::GetCertificateLabel() const {
+  return certificate_label_;
+}
+
 PageInfoModel::PageInfoModel() : observer_(NULL) {
   Init();
 }