Disable "Reset to Default Theme" button in Google Chrome Options / Personal S...

chrome/browser/browser_theme_provider.cc

 // Copyright (c) 2009 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/browser_theme_provider.h"
 
 #include "app/gfx/codec/png_codec.h"
 #include "app/gfx/skbitmap_operations.h"
 #include "base/file_util.h"
 #include "base/stl_util-inl.h"
@@ skipping 452 matching lines @@
 void BrowserThemeProvider::SetTheme(Extension* extension) {
   // Clear our image cache.
   ClearCaches();
 
   DCHECK(extension);
   DCHECK(extension->IsTheme());
   SetImageData(extension->GetThemeImages(),
                extension->path());
   SetColorData(extension->GetThemeColors());
   SetTintData(extension->GetThemeTints());
+
+  // Drop out to default theme if the theme data is empty.
+  if (images_.empty() && colors_.empty() && tints_.empty()) {
+    UseDefaultTheme();
+    return;
+  }
+
   SetDisplayPropertyData(extension->GetThemeDisplayProperties());
   raw_data_.clear();
 
   SaveImageData(extension->GetThemeImages());
   SaveColorData();
   SaveTintData();
   SaveDisplayPropertyData();
   SaveThemeID(extension->id());
 
   // Process all images when we first set theme.
@@ skipping 794 matching lines @@
 }
 
 bool BrowserThemeProvider::ShouldTintFrames() const {
   return (HasCustomImage(IDR_THEME_FRAME) ||
       tints_.count(GetTintKey(TINT_BACKGROUND_TAB)) ||
       tints_.count(GetTintKey(TINT_FRAME)) ||
       tints_.count(GetTintKey(TINT_FRAME_INACTIVE)) ||
       tints_.count(GetTintKey(TINT_FRAME_INCOGNITO)) ||
       tints_.count(GetTintKey(TINT_FRAME_INCOGNITO_INACTIVE)));
 }