Fixes for -Wunused-function on Linux, Android and ChromeOS

chrome/browser/ui/gtk/omnibox/omnibox_view_gtk.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/omnibox/omnibox_view_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include <algorithm>
@@ skipping 50 matching lines @@
 const char kSecureSchemeColor[] = "#079500";
 const char kSecurityErrorSchemeColor[] = "#a20000";
 
 const double kStrikethroughStrokeRed = 162.0 / 256.0;
 const double kStrikethroughStrokeWidth = 2.0;
 
 size_t GetUTF8Offset(const string16& text, size_t text_offset) {
   return UTF16ToUTF8(text.substr(0, text_offset)).size();
 }
 
-// A helper method for determining a valid drag operation given the allowed
-// operation.  We prefer copy over link.
-int CopyOrLinkDragOperation(int drag_operation) {
-  if (drag_operation & ui::DragDropTypes::DRAG_COPY)
-    return ui::DragDropTypes::DRAG_COPY;
-  if (drag_operation & ui::DragDropTypes::DRAG_LINK)
-    return ui::DragDropTypes::DRAG_LINK;
-  return ui::DragDropTypes::DRAG_NONE;
-}
-
 // Stores GTK+-specific state so it can be restored after switching tabs.
 struct ViewState {
   explicit ViewState(const OmniboxViewGtk::CharRange& selection_range)
       : selection_range(selection_range) {
   }
 
   // Range of selected text.
   OmniboxViewGtk::CharRange selection_range;
 };
 
@@ skipping 2038 matching lines @@
 void OmniboxViewGtk::AdjustVerticalAlignmentOfGrayTextView() {
   // By default, GtkTextView layouts an anchored child widget just above the
   // baseline, so we need to move the |gray_text_view_| down to make sure it
   // has the same baseline as the |text_view_|.
   PangoLayout* layout = gtk_label_get_layout(GTK_LABEL(gray_text_view_));
   int height;
   pango_layout_get_size(layout, NULL, &height);
   int baseline = pango_layout_get_baseline(layout);
   g_object_set(gray_text_anchor_tag_, "rise", baseline - height, NULL);
 }