Ensure there are always nice icons for bookmark apps.

extensions/common/image_util.cc

 // Copyright 2014 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 "extensions/browser/image_util.h"
+#include "extensions/common/image_util.h"
 
 #include <stdint.h>
 #include <vector>
 
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace extensions {
 namespace image_util {
 
 bool ParseCSSColorString(const std::string& color_string, SkColor* result) {
   std::string formatted_color;
   // Check the string for incorrect formatting.
   if (color_string.empty() || color_string[0] != '#')
     return false;
@@ skipping 13 matching lines @@
   // Convert the string to an integer and make sure it is in the correct value
   // range.
   std::vector<uint8_t> color_bytes;
   if (!base::HexStringToBytes(formatted_color, &color_bytes))
     return false;
 
   *result = SkColorSetARGB(255, color_bytes[0], color_bytes[1], color_bytes[2]);
   return true;
 }
 
+std::string GenerateCSSColorString(SkColor color) {
+  return base::StringPrintf("#%02X%02X%02X", SkColorGetR(color),
+                            SkColorGetG(color), SkColorGetB(color));
+}
+
 }  // namespace image_util
 }  // namespace extensions