Check if theme is ready.

chrome/browser/ui/gtk/gtk_theme_service.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/gtk_theme_service.h"
 
 #include <gtk/gtk.h>
 
 #include <set>
 #include <string>
@@ skipping 613 matching lines @@
     case base::nix::DESKTOP_ENVIRONMENT_KDE4:
     case base::nix::DESKTOP_ENVIRONMENT_OTHER:
       return false;
   }
   // Unless GetDesktopEnvironment() badly misbehaves, this should never happen.
   NOTREACHED();
   return false;
 }
 
 void GtkThemeService::ClearAllThemeData() {
   colors_.clear();

[pkotwicz, 2013/08/07 16:46:10]

Can this code be moved to GtkThemeService::FreePlatformCaches()?

[pkotwicz, 2013/08/07 16:46:10]

Can we move this code to FreePlatformCaches() ?

[Adrian Kuegel, 2013/08/07 18:25:33]

Done.

   tints_.clear();
 
   ThemeService::ClearAllThemeData();
 }
 
 void GtkThemeService::LoadThemePrefs() {
   // Initialize the values sent to webkit with the default values.
   // ThemeService::LoadThemePrefs() will replace them with values for the native
   // gtk theme if necessary.
   LoadDefaultValues();
 
   // This takes care of calling SetNativeTheme() if necessary.
   ThemeService::LoadThemePrefs();
 
   SetXDGIconTheme();
   RebuildMenuIconSets();
 }
 
 void GtkThemeService::NotifyThemeChanged() {
+  if (!ready_)
+    return;
+
   ThemeService::NotifyThemeChanged();
 
   // Notify all GtkChromeButtons of their new rendering mode:
   for (std::vector<GtkWidget*>::iterator it = chrome_buttons_.begin();
        it != chrome_buttons_.end(); ++it) {
     gtk_chrome_button_set_use_gtk_rendering(
         GTK_CHROME_BUTTON(*it), use_gtk_);
   }
 
   for (std::vector<GtkWidget*>::iterator it = link_buttons_.begin();
@@ skipping 509 matching lines @@
   cairo_stroke(cr);
   cairo_destroy(cr);
   cairo_pattern_destroy(pattern);
 
   return TRUE;
 }
 
 void GtkThemeService::OnUsesSystemThemeChanged() {
   use_gtk_ = profile()->GetPrefs()->GetBoolean(prefs::kUsesSystemTheme);
 }