First cut at custom user style sheets.

chrome/browser/tab_contents/render_view_host_delegate_helper.cc

 // Copyright (c) 2010 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/tab_contents/render_view_host_delegate_helper.h"
 
 #include "base/command_line.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/character_encoding.h"
 #include "chrome/browser/pref_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
+#include "chrome/browser/user_style_sheet_watcher.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 
 TabContents* RenderViewHostDelegateViewHelper::CreateNewWindow(
     int route_id,
     Profile* profile,
     SiteInstance* site,
     DOMUITypeID domui_type,
     TabContents* old_tab_contents) {
   // Create the new web contents. This will automatically create the new
@@ skipping 75 matching lines @@
        i != pending_widget_views_.end(); ++i) {
     if (host->view() == i->second) {
       pending_widget_views_.erase(i);
       return;
     }
   }
 }
 
 // static
 WebPreferences RenderViewHostDelegateHelper::GetWebkitPrefs(
-    PrefService* prefs, bool is_dom_ui) {
-
+    Profile* profile, bool is_dom_ui) {
+  PrefService* prefs = profile->GetPrefs();
   WebPreferences web_prefs;
 
   web_prefs.fixed_font_family =
       prefs->GetString(prefs::kWebKitFixedFontFamily);
   web_prefs.serif_font_family =
       prefs->GetString(prefs::kWebKitSerifFontFamily);
   web_prefs.sans_serif_font_family =
       prefs->GetString(prefs::kWebKitSansSerifFontFamily);
   if (prefs->GetBoolean(prefs::kWebKitStandardFontIsSerif))
     web_prefs.standard_font_family = web_prefs.serif_font_family;
@@ skipping 46 matching lines @@
     web_prefs.uses_page_cache =
         command_line.HasSwitch(switches::kEnableFastback);
     web_prefs.remote_fonts_enabled =
         !command_line.HasSwitch(switches::kDisableRemoteFonts);
     web_prefs.xss_auditor_enabled =
         !command_line.HasSwitch(switches::kDisableXSSAuditor);
     web_prefs.application_cache_enabled =
         !command_line.HasSwitch(switches::kDisableApplicationCache);
 
     web_prefs.local_storage_enabled =
-      !command_line.HasSwitch(switches::kDisableLocalStorage);
+        !command_line.HasSwitch(switches::kDisableLocalStorage);
     web_prefs.databases_enabled =
-      !command_line.HasSwitch(switches::kDisableDatabases);
+        !command_line.HasSwitch(switches::kDisableDatabases);
     web_prefs.experimental_webgl_enabled =
-      command_line.HasSwitch(switches::kEnableExperimentalWebGL);
+        command_line.HasSwitch(switches::kEnableExperimentalWebGL);
     web_prefs.site_specific_quirks_enabled =
-      !command_line.HasSwitch(switches::kDisableSiteSpecificQuirks);
+        !command_line.HasSwitch(switches::kDisableSiteSpecificQuirks);
     web_prefs.allow_file_access_from_file_urls =
-      command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
+        command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
     web_prefs.show_composited_layer_borders =
-      command_line.HasSwitch(switches::kShowCompositedLayerBorders);
+        command_line.HasSwitch(switches::kShowCompositedLayerBorders);
+    web_prefs.user_style_sheet_enabled =
+        command_line.HasSwitch(switches::kEnableUserStyleSheet);
+    if (web_prefs.user_style_sheet_enabled) {
+      web_prefs.user_style_sheet_location =
+          profile->GetUserStyleSheetWatcher()->user_style_sheet();
+    }
+
   }
 
   web_prefs.uses_universal_detector =
       prefs->GetBoolean(prefs::kWebKitUsesUniversalDetector);
   web_prefs.text_areas_are_resizable =
       prefs->GetBoolean(prefs::kWebKitTextAreasAreResizable);
 
-  // User CSS is currently disabled because it crashes chrome.  See
-  // webkit/glue/webpreferences.h for more details.
-
   // Make sure we will set the default_encoding with canonical encoding name.
   web_prefs.default_encoding =
       CharacterEncoding::GetCanonicalEncodingNameByAliasName(
           web_prefs.default_encoding);
   if (web_prefs.default_encoding.empty()) {
     prefs->ClearPref(prefs::kDefaultCharset);
     web_prefs.default_encoding = WideToASCII(
         prefs->GetString(prefs::kDefaultCharset));
   }
   DCHECK(!web_prefs.default_encoding.empty());
 
   if (is_dom_ui) {
     web_prefs.loads_images_automatically = true;
     web_prefs.javascript_enabled = true;
   }
 
   return web_prefs;
 }