Use FrameSelection::selectedText where possible.

third_party/WebKit/Source/core/editing/FrameSelection.h

Index: third_party/WebKit/Source/core/editing/FrameSelection.h
diff --git a/third_party/WebKit/Source/core/editing/FrameSelection.h b/third_party/WebKit/Source/core/editing/FrameSelection.h
index 46d5a6754637304602ad876b10fff7d96e26ba59..97de25d46feb1d41d61ccca256427de5e3d6df3b 100644
--- a/third_party/WebKit/Source/core/editing/FrameSelection.h
+++ b/third_party/WebKit/Source/core/editing/FrameSelection.h
@@ -33,6 +33,7 @@
 #include "core/editing/EphemeralRange.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/editing/VisibleSelection.h"
+#include "core/editing/iterators/TextIteratorFlags.h"
 #include "core/layout/ScrollAlignment.h"
 #include "platform/Timer.h"
 #include "platform/geometry/IntRect.h"
@@ -218,7 +219,7 @@ public:
     void clearTypingStyle();
 
     String selectedHTMLForClipboard() const;
-    String selectedText() const;
+    String selectedText(TextIteratorBehavior = TextIteratorDefaultBehavior) const;
     String selectedTextForClipboard() const;
 
     // The bounds are clipped to the viewport as this is what callers expect.