Adds a new theme.css endpoint for NTP that sets the background of NTP to the current theme backgrou…

chrome/browser/search/local_ntp_source.cc

 // Copyright 2013 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/search/local_ntp_source.h"
 
 #include "base/command_line.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/search/instant_io_context.h"
 #include "chrome/browser/search/local_files_ntp_source.h"
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
+#include "chrome/browser/themes/theme_properties.h"
+#include "chrome/browser/themes/theme_service.h"
+#include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/search_engines/template_url_prepopulate_data.h"
 #include "components/search_engines/template_url_service.h"
 #include "grit/browser_resources.h"
 #include "grit/theme_resources.h"
 #include "net/url_request/url_request.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/base/webui/jstemplate_builder.h"
 #include "ui/base/webui/web_ui_util.h"
 #include "ui/resources/grit/ui_resources.h"
 #include "url/gurl.h"
 
 namespace {
 
 // Signifies a locally constructed resource, i.e. not from grit/.
 const int kLocalResource = -1;
 
 const char kConfigDataFilename[] = "config.js";
+const char kThemeCSSFilename[] = "theme.css";
 
 const struct Resource{
   const char* filename;
   int identifier;
   const char* mime_type;
 } kResources[] = {
   { "local-ntp.html", IDR_LOCAL_NTP_HTML, "text/html" },
   { "local-ntp.js", IDR_LOCAL_NTP_JS, "application/javascript" },
   { kConfigDataFilename, kLocalResource, "application/javascript" },
+  { kThemeCSSFilename, kLocalResource, "text/css" },
   { "local-ntp.css", IDR_LOCAL_NTP_CSS, "text/css" },
   { "images/close_2.png", IDR_CLOSE_2, "image/png" },
   { "images/close_2_hover.png", IDR_CLOSE_2_H, "image/png" },
   { "images/close_2_active.png", IDR_CLOSE_2_P, "image/png" },
   { "images/close_2_white.png", IDR_CLOSE_2_MASK, "image/png" },
   { "images/close_3_mask.png", IDR_CLOSE_3_MASK, "image/png" },
   { "images/close_4_button.png", IDR_CLOSE_4_BUTTON, "image/png" },
   { "images/google_logo.png", IDR_LOCAL_NTP_IMAGES_LOGO_PNG, "image/png" },
   { "images/ntp_default_favicon.png", IDR_NTP_DEFAULT_FAVICON, "image/png" },
 };
@@ skipping 88 matching lines @@
   JSONStringValueSerializer serializer(&js_text);
   serializer.Serialize(config_data);
 
   std::string config_data_js;
   config_data_js.append("var configData = ");
   config_data_js.append(js_text);
   config_data_js.append(";");
   return config_data_js;
 }
 
+std::string GetThemeCSS(Profile* profile) {
+  ThemeService* theme_service = ThemeServiceFactory::GetForProfile(profile);
+  SkColor background_color =
+      theme_service->GetColor(ThemeProperties::COLOR_NTP_BACKGROUND);
+
+  return base::StringPrintf("body { background-color: #%02X%02X%02X; }",
+    SkColorGetR(background_color),

[Mathieu, 2015/10/14 20:53:03]

can you run "git cl format" I'm thinking the indenting will be 4 here

[fserb, 2015/10/20 18:48:16]

Done.

+    SkColorGetG(background_color),
+    SkColorGetB(background_color));
+}
+
 std::string GetLocalNtpPath() {
   return std::string(chrome::kChromeSearchScheme) + "://" +
          std::string(chrome::kChromeSearchLocalNtpHost) + "/";
 }
 
 }  // namespace
 
 LocalNtpSource::LocalNtpSource(Profile* profile) : profile_(profile) {
 }
 
 LocalNtpSource::~LocalNtpSource() {
 }
 
 std::string LocalNtpSource::GetSource() const {
   return chrome::kChromeSearchLocalNtpHost;
 }
 
 void LocalNtpSource::StartDataRequest(
     const std::string& path,
     int render_process_id,
     int render_frame_id,
     const content::URLDataSource::GotDataCallback& callback) {
   std::string stripped_path = StripParameters(path);
   if (stripped_path == kConfigDataFilename) {
     std::string config_data_js = GetConfigData(profile_);
     callback.Run(base::RefCountedString::TakeString(&config_data_js));
     return;
   }
+  if (stripped_path == kThemeCSSFilename) {
+    std::string theme_css = GetThemeCSS(profile_);
+    callback.Run(base::RefCountedString::TakeString(&theme_css));
+    return;
+  }
 
 #if !defined(GOOGLE_CHROME_BUILD)
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kLocalNtpReload)) {
     if (stripped_path == "local-ntp.html" || stripped_path == "local-ntp.js" ||
         stripped_path == "local-ntp.css") {
       base::ReplaceChars(stripped_path, "-", "_", &stripped_path);
       local_ntp::SendLocalFileResource(stripped_path, callback);
       return;
     }
@@ skipping 43 matching lines @@
     }
   }
   return false;
 }
 
 std::string LocalNtpSource::GetContentSecurityPolicyFrameSrc() const {
   // Allow embedding of most visited iframes.
   return base::StringPrintf("frame-src %s;",
                             chrome::kChromeSearchMostVisitedUrl);
 }