Adds support for showing the match preview on views. It's behind the

chrome/browser/tab_contents/tab_contents_delegate.h

Index: chrome/browser/tab_contents/tab_contents_delegate.h
diff --git a/chrome/browser/tab_contents/tab_contents_delegate.h b/chrome/browser/tab_contents/tab_contents_delegate.h
index bcefecf55bc3a51a9e69b4e54a0a47e1a8cce388..d55aa1154669ca62181dcf908cd58dfd6efcbb62 100644
--- a/chrome/browser/tab_contents/tab_contents_delegate.h
+++ b/chrome/browser/tab_contents/tab_contents_delegate.h
@@ -272,6 +272,11 @@ class TabContentsDelegate : public AutomationResourceRoutingDelegate {
   // PDF using the internal PDF plugin.
   virtual void ContentTypeChanged(TabContents* source);
 
+  // Sent when the user does a gesture that results in committing the match
+  // preview. The delegate should replace |source| with the |source|'s match
+  // preview TabContents.
+  virtual void CommitMatchPreview(TabContents* source);
+
  protected:
   virtual ~TabContentsDelegate();
 };