Added SkColorToHexString function.

Added function to convert SkColor to a formatted hexadecimal string, and
replaced repetitious logic with this function.

Bug: 1286561
Change-Id: I6bde8689494637b59ca6acd68c60bc1c5e56facf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3382021
Reviewed-by: Mark Schillaci <mschillaci@google.com>
Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Alexander Bolodurin <alexbn@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Catherine Cheng <catherinecheng@google.com>
Cr-Commit-Position: refs/heads/main@{#959012}

chrome/browser/new_tab_page/chrome_colors/generate_colors_info.cc

@@ -7,9 +7,9 @@
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
 #include "chrome/browser/new_tab_page/chrome_colors/selected_colors_info.h"
 #include "chrome/common/themes/autogenerated_theme_util.h"
+#include "skia/ext/skia_utils_base.h"
 
 // Template for color info line.
 // $1 - color id
@@ -49,12 +49,6 @@ const char kFileContentTemplate[] =
     "\n"
     "#endif  // CHROME_COMMON_SEARCH_GENERATED_COLORS_INFO_H_\n";
 
-// Returns hex string representation for the |color| in "#FFFFFF" format.
-std::string SkColorToHexString(SkColor color) {
-  return base::StringPrintf("#%02X%02X%02X", SkColorGetR(color),
-                            SkColorGetG(color), SkColorGetB(color));
-}
-
 // Generates color info line in the following format:
 // ColorInfo(ID, SkColorSetRGB(R, G, B), LABEL, ICON_DATA)
 std::string GenerateColorLine(chrome_colors::ColorInfo color_info) {

chrome/browser/ui/webui/new_tab_page/new_tab_page_ui.cc

@@ -59,6 +59,7 @@
 #include "google_apis/gaia/core_account_id.h"
 #include "media/base/media_switches.h"
 #include "services/network/public/mojom/content_security_policy.mojom.h"
+#include "skia/ext/skia_utils_base.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -596,11 +597,8 @@ void NewTabPageUI::OnThemeChanged() {
   auto background_color =
       ThemeService::GetThemeProviderForProfile(profile_).GetColor(
           ThemeProperties::COLOR_NTP_BACKGROUND);
-  update->SetString(
-      "backgroundColor",
-      base::StringPrintf("#%02X%02X%02X", SkColorGetR(background_color),
-                         SkColorGetG(background_color),
-                         SkColorGetB(background_color)));
+  update->SetString("backgroundColor",
+                    skia::SkColorToHexString(background_color));
   content::WebUIDataSource::Update(profile_, chrome::kChromeUINewTabPageHost,
                                    std::move(update));
 }

content/browser/accessibility/browser_accessibility_android.cc

@@ -12,10 +12,10 @@
 #include "base/lazy_instance.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/public/common/content_client.h"
+#include "skia/ext/skia_utils_base.h"
 #include "third_party/blink/public/strings/grit/blink_accessibility_strings.h"
 #include "third_party/blink/public/strings/grit/blink_strings.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ -646,11 +646,7 @@ std::u16string BrowserAccessibilityAndroid::GetTextContentUTF16() const {
   if (GetRole() == ax::mojom::Role::kColorWell) {
     unsigned int color = static_cast<unsigned int>(
         GetIntAttribute(ax::mojom::IntAttribute::kColorValue));
-    unsigned int red = SkColorGetR(color);
-    unsigned int green = SkColorGetG(color);
-    unsigned int blue = SkColorGetB(color);
-    return base::UTF8ToUTF16(
-        base::StringPrintf("#%02X%02X%02X", red, green, blue));
+    return base::UTF8ToUTF16(skia::SkColorToHexString(color));
   }
 
   std::u16string text = GetNameAsString16();

skia/ext/skia_utils_base.cc

@@ -7,6 +7,7 @@
 #include <stdint.h>
 
 #include "base/pickle.h"
+#include "base/strings/stringprintf.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkData.h"
 #include "third_party/skia/include/core/SkEncodedImageFormat.h"
@@ -115,4 +116,8 @@ bool SkBitmapToN32OpaqueOrPremul(const SkBitmap& in, SkBitmap* out) {
   return true;
 }
 
+std::string SkColorToHexString(SkColor color) {
+  return base::StringPrintf("#%02X%02X%02X", SkColorGetR(color),
+                            SkColorGetG(color), SkColorGetB(color));
+}
 }  // namespace skia

skia/ext/skia_utils_base.h

@@ -5,6 +5,7 @@
 #ifndef SKIA_EXT_SKIA_UTILS_BASE_H_
 #define SKIA_EXT_SKIA_UTILS_BASE_H_
 
+#include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkFlattenable.h"
 #include "third_party/skia/include/ports/SkFontConfigInterface.h"
 
@@ -55,6 +56,9 @@ SK_API void WriteSkFontStyle(base::Pickle* pickle, SkFontStyle style);
 // delaying this conversion until a later time.
 SK_API bool SkBitmapToN32OpaqueOrPremul(const SkBitmap& in, SkBitmap* out);
 
+// Returns hex string representation for the |color| in "#FFFFFF" format.
+SK_API std::string SkColorToHexString(SkColor color);
+
 }  // namespace skia
 
 #endif  // SKIA_EXT_SKIA_UTILS_BASE_H_

skia/ext/skia_utils_base_unittest.cc

@@ -6,6 +6,7 @@
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkImageInfo.h"
 
 namespace skia {
@@ -85,5 +86,12 @@ TEST(SkiaUtilsBase, ConvertWeirdFormatToN32) {
   }
 }
 
+TEST(SkiaUtilsBase, ConvertSkColorToHexString) {
+  EXPECT_EQ(SkColorToHexString(SK_ColorBLUE), "#0000FF");
+  EXPECT_EQ(SkColorToHexString(SK_ColorRED), "#FF0000");
+  EXPECT_EQ(SkColorToHexString(SK_ColorGREEN), "#00FF00");
+  EXPECT_EQ(SkColorToHexString(SK_ColorWHITE), "#FFFFFF");
+}
+
 }  // namespace
 }  // namespace skia

ui/views/color_chooser/color_chooser_view.cc

@@ -14,10 +14,10 @@
 #include "base/check.h"
 #include "base/cxx17_backports.h"
 #include "base/strings/string_number_conversions.h"
-#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "cc/paint/paint_flags.h"
 #include "cc/paint/paint_shader.h"
+#include "skia/ext/skia_utils_base.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
@@ -53,9 +53,7 @@ constexpr int kBorderWidth = 1;
 constexpr int kTextfieldLengthInChars = 14;
 
 std::u16string GetColorText(SkColor color) {
-  return base::ASCIIToUTF16(
-      base::StringPrintf("#%02x%02x%02x", SkColorGetR(color),
-                         SkColorGetG(color), SkColorGetB(color)));
+  return base::ASCIIToUTF16(skia::SkColorToHexString(color));
 }
 
 bool GetColorFromText(const std::u16string& text, SkColor* result) {