OOPIF: Clear old focused frame when focus moves to a cross-process frame.

third_party/WebKit/public/web/WebLocalFrame.h

Index: third_party/WebKit/public/web/WebLocalFrame.h
diff --git a/third_party/WebKit/public/web/WebLocalFrame.h b/third_party/WebKit/public/web/WebLocalFrame.h
index e9dbe9926f5cc2ac9ad063c5728c1d13a436e5d1..44bace909f42b7733895f321970c88a94a52aa2e 100644
--- a/third_party/WebKit/public/web/WebLocalFrame.h
+++ b/third_party/WebKit/public/web/WebLocalFrame.h
@@ -149,6 +149,11 @@ public:
     // the current base, this function will do nothing.
     virtual void moveRangeSelectionExtent(const WebPoint&) = 0;
 
+    // Focus ------------------------------------------------------------------
+
+    // Called when this frame loses focus to a frame in another process.
+    virtual void clearFocus() = 0;
+
     // Content Settings -------------------------------------------------------
 
     virtual void setContentSettingsClient(WebContentSettingsClient*) = 0;