WebLocalFrameImpl::selectWordAroundPosition should select a word before space.

Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1128 matching lines @@
 
     RefPtrWillBeRawPtr<Range> range = frame()->selection().toNormalizedRange();
     if (!range)
         return WebString();
 
     return createMarkup(range.get(), 0, AnnotateForInterchange, false, ResolveNonLocalURLs);
 }
 
 void WebLocalFrameImpl::selectWordAroundPosition(LocalFrame* frame, VisiblePosition position)
 {
-    VisibleSelection selection(position);
-    selection.expandUsingGranularity(WordGranularity);
-
-    TextGranularity granularity = selection.isRange() ? WordGranularity : CharacterGranularity;
-    frame->selection().setSelection(selection, granularity);
+    frame->selection().selectWordAroundPosition(position);
 }
 
 bool WebLocalFrameImpl::selectWordAroundCaret()
 {
     FrameSelection& selection = frame()->selection();
     if (selection.isNone() || selection.isRange())
         return false;
     selectWordAroundPosition(frame(), selection.selection().visibleStart());
     return true;
 }
@@ skipping 797 matching lines @@
 
 void WebLocalFrameImpl::invalidateAll() const
 {
     ASSERT(frame() && frame()->view());
     FrameView* view = frame()->view();
     view->invalidateRect(view->frameRect());
     invalidateScrollbar();
 }
 
 } // namespace blink