Refactor to make BlimpLocationProvider accessible to content layer.

content/public/browser/content_browser_client.cc

Index: content/public/browser/content_browser_client.cc
diff --git a/content/public/browser/content_browser_client.cc b/content/public/browser/content_browser_client.cc
index d8c321bcf31482d20ff7485f224182db684515ca..a596e1ec9556d856436b13f5a986d860ecf4eff6 100644
--- a/content/public/browser/content_browser_client.cc
+++ b/content/public/browser/content_browser_client.cc
@@ -353,6 +353,10 @@ LocationProvider* ContentBrowserClient::OverrideSystemLocationProvider() {
   return nullptr;
 }
 
+LocationProvider* ContentBrowserClient::GetSoleLocationProvider() {
+  return nullptr;
+}
+
 DevToolsManagerDelegate* ContentBrowserClient::GetDevToolsManagerDelegate() {
   return nullptr;
 }