Adds paste function to searchbox api and handles paste event on fakebox

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 9fb5b943a747f160e079815b65f32ba5156d46d4..a138de5727d63d1859e5a6f47edef63dfe5f68cb 100644
--- a/chrome/browser/ui/omnibox/omnibox_view.h
+++ b/chrome/browser/ui/omnibox/omnibox_view.h
@@ -231,10 +231,18 @@ class OmniboxView {
   virtual int OnPerformDrop(const ui::DropTargetEvent& event) = 0;
 #endif
 
-  // Returns a string with any leading javascript schemas stripped from the
-  // input text.
+  // Returns |text| with any leading javascript schemas stripped.
   static string16 StripJavascriptSchemas(const string16& text);
 
+  // First, calls StripJavascriptSchemas().  Then automatically collapses
+  // internal whitespace as follows:
+  // * If the only whitespace in |text| is newlines, users are most likely
+  // pasting in URLs split into multiple lines by terminals, email programs,
+  // etc. So all newlines are removed.
+  // * Otherwise, users may be pasting in search data, e.g. street addresses. In
+  // this case, runs of whitespace are collapsed down to single spaces.
+  static string16 SanitizeTextForPaste(const string16& text);
+
   // Returns the current clipboard contents as a string that can be pasted in.
   // In addition to just getting CF_UNICODETEXT out, this can also extract URLs
   // from bookmarks on the clipboard.