[test fixlet] Add tests for the zoom icon in the location bar on GTK.

chrome/browser/ui/gtk/zoom_bubble_gtk.cc

 // Copyright (c) 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/zoom_bubble_gtk.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "ui/base/gtk/gtk_hig_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/rect.h"
 
 namespace {
 
-// Pointer to singleton object (NULL if no bubble is open).
-ZoomBubbleGtk* g_bubble = NULL;
-
 // Number of milliseconds the bubble should stay open for if it will auto-close.
 const int kBubbleCloseDelay = 1500;
 
 // Need to manually set anchor width and height to ensure that the bubble shows
 // in the correct spot the first time it is displayed when no icon is present.
 const int kBubbleAnchorWidth = 20;
 const int kBubbleAnchorHeight = 25;
 
 }  // namespace
 
 // static
+ZoomBubbleGtk* ZoomBubbleGtk::g_bubble = NULL;
+
+// static
 void ZoomBubbleGtk::Show(GtkWidget* anchor,
                          TabContents* tab_contents,
                          bool auto_close) {
   // If the bubble is already showing and its |auto_close_| value is equal to
   // |auto_close|, the bubble can be reused and only the label text needs to
   // be updated.
   if (g_bubble &&
       g_bubble->auto_close_ == auto_close &&
       g_bubble->bubble_->anchor_widget() == anchor) {
     g_bubble->Refresh();
   } else {
     // If the bubble is already showing but its |auto_close_| value is not equal
     // to |auto_close|, the bubble's focus properties must change, so the
     // current bubble must be closed and a new one created.
     Close();
     DCHECK(!g_bubble);
 
     g_bubble = new ZoomBubbleGtk(anchor, tab_contents, auto_close);
   }
 }
 
 // static
 void ZoomBubbleGtk::Close() {
   if (g_bubble)
     g_bubble->CloseBubble();
 }
 
+// static
+bool ZoomBubbleGtk::IsShowing() {
+  return g_bubble != NULL;
+}
+
 ZoomBubbleGtk::ZoomBubbleGtk(GtkWidget* anchor,
                              TabContents* tab_contents,
                              bool auto_close)
     : auto_close_(auto_close),
       mouse_inside_(false),
       tab_contents_(tab_contents) {
   GtkThemeService* theme_service =
       GtkThemeService::GetFrom(Profile::FromBrowserContext(
           tab_contents->web_contents()->GetBrowserContext()));
 
@@ skipping 128 matching lines @@
   StopTimerIfNecessary();
   return FALSE;
 }
 
 gboolean ZoomBubbleGtk::OnMouseLeave(GtkWidget* widget,
                                      GdkEventCrossing* event) {
   mouse_inside_ = false;
   StartTimerIfNecessary();
   return FALSE;
 }