WebLocalFrameImpl::selectWordAroundPosition should select a word before space.

Source/core/editing/FrameSelection.cpp

Index: Source/core/editing/FrameSelection.cpp
diff --git a/Source/core/editing/FrameSelection.cpp b/Source/core/editing/FrameSelection.cpp
index 969308a48948c4f1c0b89325b2afe979700cab12..86c6ce0ffcb63657e3bb1f4b08c81c48808427bb 100644
--- a/Source/core/editing/FrameSelection.cpp
+++ b/Source/core/editing/FrameSelection.cpp
@@ -72,6 +72,7 @@
 #include "platform/SecureTextInput.h"
 #include "platform/geometry/FloatQuad.h"
 #include "platform/graphics/GraphicsContext.h"
+#include "platform/text/UnicodeUtilities.h"
 #include "wtf/text/CString.h"
 #include <stdio.h>
 
@@ -1930,6 +1931,22 @@ void FrameSelection::scheduleVisualUpdate() const
         page->animator().scheduleVisualUpdate();
 }
 
+bool FrameSelection::selectWordAroundPosition(const VisiblePosition& position)
+{
+    static const EWordSide wordSideList[2] = { RightWordIfOnBoundary, LeftWordIfOnBoundary };
+    for (EWordSide wordSide : wordSideList) {
+        VisiblePosition start = startOfWord(position, wordSide);
+        VisiblePosition end = endOfWord(position, wordSide);
+        String text = plainText(start.deepEquivalent(), end.deepEquivalent());
+        if (!text.isEmpty() && !isSeparator(text.characterStartingAt(0))) {
+            setSelection(VisibleSelection(start, end), WordGranularity);
+            return true;
+        }
+    }
+
+    return false;
+}
+
 }
 
 #ifndef NDEBUG