Adds more metadata to the about:webapks page

chrome/browser/ui/webui/color_utils.cc

+// Copyright 2017 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/color_utils.h"
+
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
+#include "content/public/common/manifest.h"
+
+std::string ColorUtils::ColorToString(int64_t color) {
+  if (color == content::Manifest::kInvalidOrMissingColor) {
+    return "";
+  }
+  return SkColorToRGBAString(reinterpret_cast<uint32_t&>(color));
+}
+
+std::string ColorUtils::SkColorToRGBAString(SkColor color) {
+  // We convert the alpha using DoubleToString because StringPrintf will use
+  // locale specific formatters (e.g., use , instead of . in German).
+  return base::StringPrintf(
+      "rgba(%d,%d,%d,%s)", SkColorGetR(color), SkColorGetG(color),
+      SkColorGetB(color),
+      base::DoubleToString(SkColorGetA(color) / 255.0).c_str());
+}
+
+std::string ColorUtils::SkColorToRGBComponents(SkColor color) {
+  return base::StringPrintf("%d,%d,%d", SkColorGetR(color), SkColorGetG(color),
+                            SkColorGetB(color));
+}