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 55c599422304f84dbb678b233788e4d3591acad8..da08a4cf256e1e727658e546f6aa57eeefbeb72b 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -714,6 +714,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_Reload, OnReload)
     IPC_MESSAGE_HANDLER(FrameMsg_TextSurroundingSelectionRequest,
                         OnTextSurroundingSelectionRequest)
+    IPC_MESSAGE_HANDLER(FrameMsg_AddStyleSheetByURL,
+                        OnAddStyleSheetByURL)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(InputMsg_CopyToFindPboard, OnCopyToFindPboard)
 #endif
@@ -1220,6 +1222,10 @@ void RenderFrameImpl::OnTextSurroundingSelectionRequest(size_t max_length) {
       surroundingText.endOffsetInTextContent()));
 }
 
+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,