Convert ClientSideDetectionHost to use the new navigation callbacks.

content/test/test_render_frame_host.cc

Index: content/test/test_render_frame_host.cc
diff --git a/content/test/test_render_frame_host.cc b/content/test/test_render_frame_host.cc
index 928e237ab677872d00ae180b27354868f1e2cf68..ff25114a8d9eedd504dcedbedb014f2c7078b416 100644
--- a/content/test/test_render_frame_host.cc
+++ b/content/test/test_render_frame_host.cc
@@ -24,6 +24,7 @@
 #include "content/test/test_render_view_host.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "net/base/load_flags.h"
+#include "net/http/http_response_headers.h"
 #include "third_party/WebKit/public/platform/WebMixedContentContextType.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom.h"
@@ -399,6 +400,13 @@ void TestRenderFrameHost::SendNavigateWithParameters(
 
 void TestRenderFrameHost::SendNavigateWithParams(
     FrameHostMsg_DidCommitProvisionalLoad_Params* params) {
+  if (navigation_handle()) {
+    scoped_refptr<net::HttpResponseHeaders> response_headers =
+        new net::HttpResponseHeaders(std::string());
+    response_headers->AddHeader(
+        std::string("Content-Type: ") + contents_mime_type_);
+    navigation_handle()->set_response_headers_for_testing(response_headers);
+  }
   FrameHostMsg_DidCommitProvisionalLoad msg(GetRoutingID(), *params);
   OnDidCommitProvisionalLoad(msg);
   last_commit_was_error_page_ = params->url_is_unreachable;