Move some content url constants to /url.

android_webview/renderer/aw_content_renderer_client.cc

Index: android_webview/renderer/aw_content_renderer_client.cc
diff --git a/android_webview/renderer/aw_content_renderer_client.cc b/android_webview/renderer/aw_content_renderer_client.cc
index 87a855ffa4eb500a2cf3f70f2a63cc9f4981c3e7..400d009c93c99dff679b161b3ada9ab5df2c8705 100644
--- a/android_webview/renderer/aw_content_renderer_client.cc
+++ b/android_webview/renderer/aw_content_renderer_client.cc
@@ -96,8 +96,8 @@ bool AwContentRendererClient::HandleNavigation(
   // For HTTP schemes, only top-level navigations can be overridden. Similarly,
   // WebView Classic lets app override only top level about:blank navigations.
   // So we filter out non-top about:blank navigations here.
-  if (frame->parent() && (gurl.SchemeIs(content::kHttpScheme) ||
-                          gurl.SchemeIs(content::kHttpsScheme) ||
+  if (frame->parent() && (gurl.SchemeIs(url::kHttpScheme) ||
+                          gurl.SchemeIs(url::kHttpsScheme) ||
                           gurl.SchemeIs(content::kAboutScheme)))
     return false;