Replace some hard coded schemes with the constants in /url/url_constants.h.

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 633774376fc362df32e084afdbbfda586ee446b3..fde47a8608aac0d0ad9e25b98ebd0b602dbe48db 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2902,7 +2902,7 @@ void RenderFrameImpl::didLoadResourceFromMemoryCache(
   // prevent large (1M+) data: URLs from crashing in the IPC system, we simply
   // filter them out here.
   GURL url(request.url());
-  if (url.SchemeIs("data"))
+  if (url.SchemeIs(url::kDataScheme))
     return;
 
   // Let the browser know we loaded a resource from the memory cache.  This