Refine tap disambiguation UMA to track same-node/different-node.

third_party/WebKit/public/web/WebView.h

Index: third_party/WebKit/public/web/WebView.h
diff --git a/third_party/WebKit/public/web/WebView.h b/third_party/WebKit/public/web/WebView.h
index 92bdf0736773c4ba96a72dbbc33fd146b0f7b557..b4b742e0ad74270332f44caeb38c57b4d5b979b1 100644
--- a/third_party/WebKit/public/web/WebView.h
+++ b/third_party/WebKit/public/web/WebView.h
@@ -406,6 +406,12 @@ class WebView : protected WebWidget {
   // Hides any popup (suggestions, selects...) that might be showing.
   virtual void hidePopups() = 0;
 
+  // Generate a synthetic touch event applying the result of a tap
+  // disambiguation popup.
+  virtual void resolveTapDisambiguation(double timestampSeconds,
+                                        WebPoint tapViewportOffset,
+                                        bool isLongPress) = 0;
+
   // Visited link state --------------------------------------------------
 
   // Tells all WebView instances to update the visited link state for the