Replicate LayoutTestRuntimeFlags across secondary window renderers.

content/shell/browser/layout_test/layout_test_message_filter.cc

Index: content/shell/browser/layout_test/layout_test_message_filter.cc
diff --git a/content/shell/browser/layout_test/layout_test_message_filter.cc b/content/shell/browser/layout_test/layout_test_message_filter.cc
index 165c39db8d91bcd2a9c9c521cb1a81ce3a2b50d6..082fc238870acb9c151c4b01ea6852b70c05ce74 100644
--- a/content/shell/browser/layout_test/layout_test_message_filter.cc
+++ b/content/shell/browser/layout_test/layout_test_message_filter.cc
@@ -11,6 +11,7 @@
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/test/layouttest_support.h"
+#include "content/shell/browser/layout_test/blink_test_controller.h"
 #include "content/shell/browser/layout_test/layout_test_browser_context.h"
 #include "content/shell/browser/layout_test/layout_test_content_browser_client.h"
 #include "content/shell/browser/layout_test/layout_test_notification_manager.h"
@@ -46,13 +47,18 @@ LayoutTestMessageFilter::~LayoutTestMessageFilter() {
 
 void LayoutTestMessageFilter::OverrideThreadForMessage(
     const IPC::Message& message, BrowserThread::ID* thread) {
-  if (message.type() == LayoutTestHostMsg_ClearAllDatabases::ID)
-    *thread = BrowserThread::FILE;
-  if (message.type() == LayoutTestHostMsg_SimulateWebNotificationClick::ID ||
-      message.type() == LayoutTestHostMsg_SimulateWebNotificationClose::ID ||
-      message.type() == LayoutTestHostMsg_SetPermission::ID ||
-      message.type() == LayoutTestHostMsg_ResetPermissions::ID)
-    *thread = BrowserThread::UI;
+  switch (message.type()) {
+    case LayoutTestHostMsg_ClearAllDatabases::ID:
+      *thread = BrowserThread::FILE;
+      break;
+    case LayoutTestHostMsg_SimulateWebNotificationClick::ID:
+    case LayoutTestHostMsg_SimulateWebNotificationClose::ID:
+    case LayoutTestHostMsg_SetPermission::ID:
+    case LayoutTestHostMsg_ResetPermissions::ID:
+    case LayoutTestHostMsg_LayoutTestRuntimeFlagsChanged::ID:
+      *thread = BrowserThread::UI;
+      break;
+  }
 }
 
 bool LayoutTestMessageFilter::OnMessageReceived(const IPC::Message& message) {
@@ -72,6 +78,8 @@ bool LayoutTestMessageFilter::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_DeleteAllCookies, OnDeleteAllCookies)
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_SetPermission, OnSetPermission)
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_ResetPermissions, OnResetPermissions)
+    IPC_MESSAGE_HANDLER(LayoutTestHostMsg_LayoutTestRuntimeFlagsChanged,
+                        OnLayoutTestRuntimeFlagsChanged)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -179,4 +187,10 @@ void LayoutTestMessageFilter::OnResetPermissions() {
       ->ResetPermissions();
 }
 
+void LayoutTestMessageFilter::OnLayoutTestRuntimeFlagsChanged(
+    const base::DictionaryValue& changed_layout_test_runtime_flags) {
+  BlinkTestController::Get()->OnLayoutTestRuntimeFlagsChanged(
+      render_process_id_, changed_layout_test_runtime_flags);
+}
+
 }  // namespace content