Navigation transitions: Added "addStyleSheetByURL" function to insert stylesheet links.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index a7a3245b9a8777c4814053beef8bcd636bf0ebf9..44137b02f4c9ee2f2d00556d16e44495519d5c7b 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -705,6 +705,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnSetCompositionFromExistingText)
     IPC_MESSAGE_HANDLER(FrameMsg_ExtendSelectionAndDelete,
                         OnExtendSelectionAndDelete)
+    IPC_MESSAGE_HANDLER(FrameMsg_AddStyleSheetByURL,
+                        OnAddStyleSheetByURL)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(InputMsg_CopyToFindPboard, OnCopyToFindPboard)
 #endif
@@ -1192,6 +1194,10 @@ void RenderFrameImpl::OnReload(bool ignore_cache) {
   frame_->reload(ignore_cache);
 }
 
+void RenderFrameImpl::OnAddStyleSheetByURL(const std::string& url) {
+  frame_->addStyleSheetByURL(WebString::fromUTF8(url));
+}
+
 bool RenderFrameImpl::ShouldUpdateSelectionTextFromContextMenuParams(
     const base::string16& selection_text,
     size_t selection_text_offset,