Replicate LayoutTestRuntimeFlags across secondary window renderers.

content/shell/renderer/layout_test/layout_test_render_frame_observer.cc

Index: content/shell/renderer/layout_test/layout_test_render_frame_observer.cc
diff --git a/content/shell/renderer/layout_test/layout_test_render_frame_observer.cc b/content/shell/renderer/layout_test/layout_test_render_frame_observer.cc
index 8638d3df10487f3a2e12ef7d23226307ded58ba7..e86a22611c5331424ff9d05bde1b06310984fd66 100644
--- a/content/shell/renderer/layout_test/layout_test_render_frame_observer.cc
+++ b/content/shell/renderer/layout_test/layout_test_render_frame_observer.cc
@@ -32,8 +32,6 @@ bool LayoutTestRenderFrameObserver::OnMessageReceived(
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(LayoutTestRenderFrameObserver, message)
     IPC_MESSAGE_HANDLER(ShellViewMsg_LayoutDumpRequest, OnLayoutDumpRequest)
-    IPC_MESSAGE_HANDLER(ShellViewMsg_ReplicateLayoutTestRuntimeFlagsChanges,
-                        OnReplicateLayoutTestRuntimeFlagsChanges)
     IPC_MESSAGE_HANDLER(ShellViewMsg_ReplicateTestConfiguration,
                         OnReplicateTestConfiguration)
     IPC_MESSAGE_HANDLER(ShellViewMsg_SetTestConfiguration,
@@ -55,24 +53,10 @@ void LayoutTestRenderFrameObserver::OnLayoutDumpRequest() {
   Send(new ShellViewHostMsg_LayoutDumpResponse(routing_id(), dump));
 }
 
-void LayoutTestRenderFrameObserver::OnReplicateLayoutTestRuntimeFlagsChanges(
-    const base::DictionaryValue& changed_layout_test_runtime_flags) {
-  LayoutTestRenderThreadObserver::GetInstance()
-      ->test_interfaces()
-      ->TestRunner()
-      ->ReplicateLayoutTestRuntimeFlagsChanges(
-          changed_layout_test_runtime_flags);
-}
-
 void LayoutTestRenderFrameObserver::OnReplicateTestConfiguration(
-    const ShellTestConfiguration& test_config,
-    const base::DictionaryValue&
-        accumulated_layout_test_runtime_flags_changes) {
+    const ShellTestConfiguration& test_config) {
   BlinkTestRunner::Get(render_frame()->GetRenderView())
       ->OnReplicateTestConfiguration(test_config);
-
-  OnReplicateLayoutTestRuntimeFlagsChanges(
-      accumulated_layout_test_runtime_flags_changes);
 }
 
 void LayoutTestRenderFrameObserver::OnSetTestConfiguration(