Implement sequential focus navigation for OOPIF.

third_party/WebKit/Source/web/WebViewImpl.h

Index: third_party/WebKit/Source/web/WebViewImpl.h
diff --git a/third_party/WebKit/Source/web/WebViewImpl.h b/third_party/WebKit/Source/web/WebViewImpl.h
index 63a94f6c250457a048f8e93d3d4711cfd784962b..4918e7bed0315ea2f43ba8cf88d27bde0a48fe4a 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.h
+++ b/third_party/WebKit/Source/web/WebViewImpl.h
@@ -81,10 +81,12 @@ class WebActiveGestureAnimation;
 class WebDevToolsAgentImpl;
 class WebElement;
 class WebLayerTreeView;
+class WebLocalFrame;
 class WebLocalFrameImpl;
 class WebImage;
 class WebPagePopupImpl;
 class WebPlugin;
+class WebRemoteFrame;
 class WebSelection;
 class WebSettingsImpl;
 class WebViewScheduler;
@@ -188,6 +190,7 @@ public:
     void smoothScroll(int targetX, int targetY, long durationMs) override;
     void zoomToFindInPageRect(const WebRect&);
     void advanceFocus(bool reverse) override;
+    void advanceFocusAcrossFrames(WebFocusType, WebRemoteFrame* from, WebLocalFrame* to) override;
     double zoomLevel() override;
     double setZoomLevel(double) override;
     void zoomLimitsChanged(double minimumZoomLevel, double maximumZoomLevel) override;