Add chrome-search: access from Instant overlay

content/public/browser/url_data_source.cc

Index: content/public/browser/url_data_source.cc
diff --git a/content/public/browser/url_data_source.cc b/content/public/browser/url_data_source.cc
index 44239d6a7c52c227df374d3778800a4e4d981e9e..b3c62b32ea36af65703cc16130e450ddfc1c573d 100644
--- a/content/public/browser/url_data_source.cc
+++ b/content/public/browser/url_data_source.cc
@@ -6,6 +6,8 @@
 
 #include "content/browser/webui/url_data_manager.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/common/url_constants.h"
+#include "net/url_request/url_request.h"
 
 namespace content {
 
@@ -43,4 +45,11 @@ bool URLDataSource::ShouldDenyXFrameOptions() const {
   return true;
 }
 
+bool URLDataSource::ShouldServiceRequest(const net::URLRequest* request) const {
+  if (request->url().SchemeIs(chrome::kChromeDevToolsScheme) ||
+      request->url().SchemeIs(chrome::kChromeUIScheme))
+    return true;
+  return false;
+}
+
 }  // namespace content