Fix control key and paste behavior in Linux omnibox.

chrome/browser/autocomplete/autocomplete_edit_view_gtk.h

Index: chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
===================================================================
--- chrome/browser/autocomplete/autocomplete_edit_view_gtk.h	(revision 24586)
+++ chrome/browser/autocomplete/autocomplete_edit_view_gtk.h	(working copy)
@@ -272,6 +272,11 @@
   }
   void HandleCopyClipboard();
 
+  static void HandlePasteClipboardThunk(GtkTextView* text_view, gpointer self) {
+    reinterpret_cast<AutocompleteEditViewGtk*>(self)->HandlePasteClipboard();
+  }
+  void HandlePasteClipboard();
+
   // Actual implementation of SelectAll(), but also provides control over
   // whether the PRIMARY selection is set to the selected text (in SelectAll(),
   // it isn't, but we want set the selection when the user clicks in the entry).
@@ -390,6 +395,11 @@
   // during sync dispatch of "move-focus" signal.
   bool tab_was_pressed_;
 
+  // Indicates that user requested to paste clipboard.
+  // The actual paste clipboard action might be performed later if the
+  // clipboard is not empty.
+  bool paste_clipboard_requested_;
+
   // If a character is inserted, store it in this variable so that it can
   // be used later in "key-press-event" signal handler to determine if a Tab or
   // Enter key event is handled by IME or not.