Add support for multi-line GlobalError messages to Views.

chrome/browser/ui/gtk/global_error_bubble.cc

Index: chrome/browser/ui/gtk/global_error_bubble.cc
diff --git a/chrome/browser/ui/gtk/global_error_bubble.cc b/chrome/browser/ui/gtk/global_error_bubble.cc
index c28cb49cd255d2a347df495a4ad8bf584f9fc9e7..47607cb29a1e3aae60367d029bf99591fc657e3b 100644
--- a/chrome/browser/ui/gtk/global_error_bubble.cc
+++ b/chrome/browser/ui/gtk/global_error_bubble.cc
@@ -55,8 +55,12 @@ GlobalErrorBubble::GlobalErrorBubble(Browser* browser,
   GtkWidget* title_label = theme_service->BuildLabel(
       UTF16ToUTF8(error_->GetBubbleViewTitle()),
       ui::kGdkBlack);
+  // TODO(yoz): Support multi-line messages.
+  string16 message;
+  if (!error_->GetBubbleViewMessages().empty())
+    message = error_->GetBubbleViewMessages()[0];
   message_label_ = theme_service->BuildLabel(
-      UTF16ToUTF8(error_->GetBubbleViewMessage()),
+      UTF16ToUTF8(message),
       ui::kGdkBlack);
   gtk_util::ForceFontSizePixels(message_label_, kMessageTextSize);
   // Message label will be sized later in "realize" callback because we need