WebLocalFrameImpl::selectWordAroundPosition should select a word before space.

Source/core/editing/FrameSelectionTest.cpp

Index: Source/core/editing/FrameSelectionTest.cpp
diff --git a/Source/core/editing/FrameSelectionTest.cpp b/Source/core/editing/FrameSelectionTest.cpp
index 2aea63be379eab58fcfb09c86e29415cfadeeaae..acaf7d96c8689ec6ffc59cf98f482692f1f135c8 100644
--- a/Source/core/editing/FrameSelectionTest.cpp
+++ b/Source/core/editing/FrameSelectionTest.cpp
@@ -138,4 +138,12 @@ TEST_F(FrameSelectionTest, PaintCaretShouldNotLayout)
     EXPECT_EQ(startCount, layoutCount());
 }
 
+TEST_F(FrameSelectionTest, SelectWordAroundPosition)
+{
+    RefPtrWillBeRawPtr<Text> text = document().createTextNode("Hello World!");
+    document().body()->appendChild(text);
+    selection().selectWordAroundPosition(VisiblePosition(Position(text, 5)));
+    EXPECT_EQ("Hello", WebString(selection().selectedText()).utf8());
+}
+
 }