WebRange-ify WebWidget::compositionRange.

third_party/WebKit/public/web/WebWidget.h

Index: third_party/WebKit/public/web/WebWidget.h
diff --git a/third_party/WebKit/public/web/WebWidget.h b/third_party/WebKit/public/web/WebWidget.h
index ea39de5e295f321a07f4d1e977c6bf252fd005b4..60c419213e702042432fae8282153341b94bb309 100644
--- a/third_party/WebKit/public/web/WebWidget.h
+++ b/third_party/WebKit/public/web/WebWidget.h
@@ -169,9 +169,8 @@ public:
     virtual bool confirmComposition(const WebString& text) { return false; }
 
     // Fetches the character range of the current composition, also called the
-    // "marked range." Returns true and fills the out-paramters on success;
-    // returns false on failure.
-    virtual bool compositionRange(size_t* location, size_t* length) { return false; }
+    // "marked range."
+    virtual WebRange compositionRange() { return WebRange(); }
 
     // Returns information about the current text input of this WebWidget.
     // Note that this query can be expensive for long fields, as it returns the