[System-Keyboard-Lock] Forward navigator functions to RenderFrameHost

third_party/WebKit/Source/core/loader/EmptyClients.cpp

Index: third_party/WebKit/Source/core/loader/EmptyClients.cpp
diff --git a/third_party/WebKit/Source/core/loader/EmptyClients.cpp b/third_party/WebKit/Source/core/loader/EmptyClients.cpp
index 9d56fd9012044bb1671b9812679802d4e843ecac..f3de8629e743154e0b4844ad14a1af3161bcfa24 100644
--- a/third_party/WebKit/Source/core/loader/EmptyClients.cpp
+++ b/third_party/WebKit/Source/core/loader/EmptyClients.cpp
@@ -37,6 +37,7 @@
 #include "core/loader/DocumentLoader.h"
 #include "platform/FileChooser.h"
 #include "platform/FrameViewBase.h"
+#include "platform/KeyboardLocker.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebApplicationCacheHost.h"
 #include "public/platform/WebMediaPlayer.h"
@@ -132,6 +133,14 @@ std::unique_ptr<WebFrameScheduler> EmptyChromeClient::CreateFrameScheduler(
   return WTF::MakeUnique<EmptyFrameScheduler>();
 }
 
+void EmptyChromeClient::RequestKeyLock(LocalFrame*,
+                                       PassRefPtr<KeyboardLocker> locker) {
+  DCHECK(locker);
+  locker->FinishLockRequest(
+      false,
+      WebString::FromASCII("EmptyChromeClient does not support key lock."));
+}
+
 NavigationPolicy EmptyLocalFrameClient::DecidePolicyForNavigation(
     const ResourceRequest&,
     DocumentLoader*,