Clicking a non-focusable element in an inactive frame should clear focus in the frame.

Source/core/page/FocusController.cpp

Index: Source/core/page/FocusController.cpp
diff --git a/Source/core/page/FocusController.cpp b/Source/core/page/FocusController.cpp
index 56871f6d5430d92440d4540bf8f0a7de13e10da7..e50606a52314b1f881a186e6deda7ea27aa6e13d 100644
--- a/Source/core/page/FocusController.cpp
+++ b/Source/core/page/FocusController.cpp
@@ -622,7 +622,7 @@ bool FocusController::setFocusedElement(Element* element, PassRefPtr<Frame> newF
     RefPtr<Document> oldDocument = oldFocusedFrame ? oldFocusedFrame->document() : 0;
 
     Element* oldFocusedElement = oldDocument ? oldDocument->focusedElement() : 0;
-    if (oldFocusedElement == element)
+    if (element && oldFocusedElement == element)
         return true;
 
     // FIXME: Might want to disable this check for caretBrowsing
@@ -631,19 +631,17 @@ bool FocusController::setFocusedElement(Element* element, PassRefPtr<Frame> newF
 
     m_page->editorClient().willSetInputMethodState();
 
-    clearSelectionIfNeeded(oldFocusedFrame.get(), newFocusedFrame.get(), element);
-
-    if (!element) {
-        if (oldDocument)
-            oldDocument->setFocusedElement(0);
-        return true;
-    }
-
-    RefPtr<Document> newDocument(element->document());
+    RefPtr<Document> newDocument;
+    if (element)
+        newDocument = &element->document();
+    else if (newFocusedFrame)
+        newDocument = newFocusedFrame->document();
 
     if (newDocument && newDocument->focusedElement() == element)
         return true;
 
+    clearSelectionIfNeeded(oldFocusedFrame.get(), newFocusedFrame.get(), element);
+
     if (oldDocument && oldDocument != newDocument)
         oldDocument->setFocusedElement(0);