Ensure there are always nice icons for bookmark apps.

extensions/common/image_util.h

Index: extensions/common/image_util.h
diff --git a/extensions/browser/image_util.h b/extensions/common/image_util.h
similarity index 77%
rename from extensions/browser/image_util.h
rename to extensions/common/image_util.h
index 2886b666539478b9a4bd6f5d2d9af4562e8013da..e9d2dfd528f86eed5998f868ffff6c33999e6c08 100644
--- a/extensions/browser/image_util.h
+++ b/extensions/common/image_util.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef EXTENSIONS_BROWSER_IMAGE_UTIL_H_
-#define EXTENSIONS_BROWSER_IMAGE_UTIL_H_
+#ifndef EXTENSIONS_COMMON_IMAGE_UTIL_H_
+#define EXTENSIONS_COMMON_IMAGE_UTIL_H_
 
 #include <string>
 
@@ -16,6 +16,9 @@ namespace image_util {
 // Parses a string like #FF9982 or #EEE to a color. Returns true for success.
 bool ParseCSSColorString(const std::string& color_string, SkColor* result);
 
+// Creates a string like #FF9982 from a color.
+std::string GenerateCSSColorString(SkColor color);
+
 }  // namespace image_util
 }  // namespace extensions