[SiteChip] Add UMA, finish wiring site chip experiment up to the omnibox.

chrome/browser/ui/omnibox/omnibox_view.h

Index: chrome/browser/ui/omnibox/omnibox_view.h
diff --git a/chrome/browser/ui/omnibox/omnibox_view.h b/chrome/browser/ui/omnibox/omnibox_view.h
index d56d120c36ae6e2b90c93055fd47613387f4bb74..393f2f598f7f78a24fde85d42a891e03b48852be 100644
--- a/chrome/browser/ui/omnibox/omnibox_view.h
+++ b/chrome/browser/ui/omnibox/omnibox_view.h
@@ -248,6 +248,9 @@ class OmniboxView {
   // from bookmarks on the clipboard.
   static base::string16 GetClipboardText();
 
+  // Disables search term replacement, reverts the omnibox, and selects all.
+  void ShowURL();
+
  protected:
   OmniboxView(Profile* profile,
               OmniboxEditController* controller,
@@ -256,9 +259,6 @@ class OmniboxView {
   // Internally invoked whenever the text changes in some way.
   virtual void TextChanged();
 
-  // Disables search term replacement, reverts the omnibox, and selects all.
-  void ShowURL();
-
   // Return the number of characters in the current buffer. The name
   // |GetTextLength| can't be used as the Windows override of this class
   // inherits from a class that defines a method with that name.