iwyu: Include stringprintf.h where appropriate, part 2.

chrome/browser/ui/webui/ntp/ntp_resource_cache.cc

 // Copyright (c) 2011 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/webui/ntp/ntp_resource_cache.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/string16.h"
+#include "base/stringprintf.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
@@ skipping 52 matching lines @@
 const char kHelpContentUrl[] =
     "https://www.google.com/support/chrome/";
 
 string16 GetUrlWithLang(const GURL& url) {
   return ASCIIToUTF16(google_util::AppendGoogleLocaleParam(url).spec());
 }
 
 std::string SkColorToRGBAString(SkColor color) {
   // We convert the alpha using DoubleToString because StringPrintf will use
   // locale specific formatters (e.g., use , instead of . in German).
-  return StringPrintf("rgba(%d,%d,%d,%s)", SkColorGetR(color),
-      SkColorGetG(color), SkColorGetB(color),
+  return base::StringPrintf(
+      "rgba(%d,%d,%d,%s)",
+      SkColorGetR(color),
+      SkColorGetG(color),
+      SkColorGetB(color),
       base::DoubleToString(SkColorGetA(color) / 255.0).c_str());
 }
 
 // Get the CSS string for the background position on the new tab page for the
 // states when the bar is attached or detached.
 std::string GetNewTabBackgroundCSS(const ui::ThemeProvider* theme_provider,
                                    bool bar_attached) {
   int alignment;
   theme_provider->GetDisplayProperty(
       ThemeService::NTP_BACKGROUND_ALIGNMENT, &alignment);
@@ skipping 462 matching lines @@
   std::string css_string;
   css_string = ReplaceStringPlaceholders(new_tab_theme_css, subst, NULL);
   css_string = ReplaceStringPlaceholders(css_string, subst2, NULL);
   css_string = ReplaceStringPlaceholders(css_string, subst3, NULL);
 
   new_tab_css_ = new RefCountedBytes;
   new_tab_css_->data.resize(css_string.size());
   std::copy(css_string.begin(), css_string.end(),
             new_tab_css_->data.begin());
 }