Add "frame to navigate" to NavigationEntry and plumb it to the RenderViewImpl

content/browser/web_contents/navigation_entry_impl.cc

Index: content/browser/web_contents/navigation_entry_impl.cc
diff --git a/content/browser/web_contents/navigation_entry_impl.cc b/content/browser/web_contents/navigation_entry_impl.cc
index 61836db1e4325317a3a4cb308cfaa4831c8ded9e..44dc6e593f4ebda5fcc5c3ad625f2cb1ffb591f6 100644
--- a/content/browser/web_contents/navigation_entry_impl.cc
+++ b/content/browser/web_contents/navigation_entry_impl.cc
@@ -271,6 +271,14 @@ bool NavigationEntryImpl::GetCanLoadLocalResources() const {
   return can_load_local_resources_;
 }
 
+void NavigationEntryImpl::SetFrameToNavigate(const std::string& frame_name) {
+  frame_to_navigate_ = frame_name;
+}
+
+const std::string& NavigationEntryImpl::GetFrameToNavigate() const {
+  return frame_to_navigate_;
+}
+
 void NavigationEntryImpl::SetScreenshotPNGData(
     const std::vector<unsigned char>& png_data) {
   screenshot_ = png_data.empty() ? NULL : new base::RefCountedBytes(png_data);