Make COLOR_CONTROL_BACKGROUND customizable from a theme extension

chrome/browser/themes/browser_theme_pack_unittest.cc

 // Copyright (c) 2012 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/themes/browser_theme_pack.h"
 
 #include <stddef.h>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_file_value_serializer.h"
@@ skipping 195 matching lines @@
   // Verifies the data in star gazing. We do this multiple times for different
   // BrowserThemePack objects to make sure it works in generated and mmapped
   // mode correctly.
   void VerifyStarGazing(BrowserThemePack* pack) {
     // First check that values we know exist, exist.
     SkColor color;
     EXPECT_TRUE(pack->GetColor(ThemeProperties::COLOR_BOOKMARK_TEXT,
                                &color));
     EXPECT_EQ(SK_ColorBLACK, color);
 
+    EXPECT_TRUE(
+        pack->GetColor(ThemeProperties::COLOR_CONTROL_BACKGROUND, &color));
+    EXPECT_EQ(SkColorSetRGB(10, 234, 123), color);
+
     EXPECT_TRUE(pack->GetColor(ThemeProperties::COLOR_NTP_BACKGROUND,
                                &color));
     EXPECT_EQ(SkColorSetRGB(57, 137, 194), color);
 
     color_utils::HSL expected = { 0.6, 0.553, 0.5 };
     color_utils::HSL actual;
     EXPECT_TRUE(pack->GetTint(ThemeProperties::TINT_BUTTONS, &actual));
     EXPECT_DOUBLE_EQ(expected.h, actual.h);
     EXPECT_DOUBLE_EQ(expected.s, actual.s);
     EXPECT_DOUBLE_EQ(expected.l, actual.l);
@@ skipping 15 matching lines @@
     // they're included in the theme pack, they were autogenerated and
     // therefore shouldn't show up when calling HasCustomImage().
     EXPECT_FALSE(pack->HasCustomImage(IDR_THEME_FRAME_INACTIVE));
     EXPECT_FALSE(pack->HasCustomImage(IDR_THEME_FRAME_INCOGNITO));
     EXPECT_FALSE(pack->HasCustomImage(IDR_THEME_FRAME_INCOGNITO_INACTIVE));
 #if !defined(OS_MACOSX)
     EXPECT_FALSE(pack->HasCustomImage(IDR_THEME_TAB_BACKGROUND_INCOGNITO));
 #endif
 
     // Make sure we don't have phantom data.
-    EXPECT_FALSE(pack->GetColor(ThemeProperties::COLOR_CONTROL_BACKGROUND,
-                                &color));
     EXPECT_FALSE(pack->GetTint(ThemeProperties::TINT_FRAME, &actual));
   }
 
   void VerifyHiDpiTheme(BrowserThemePack* pack) {
     // The high DPI theme defines the following images:
     EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_FRAME));
     EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_FRAME_INACTIVE));
     EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_FRAME_INCOGNITO));
     EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_FRAME_INCOGNITO_INACTIVE));
     EXPECT_TRUE(pack->HasCustomImage(IDR_THEME_TOOLBAR));
@@ skipping 387 matching lines @@
   }
 
   // Part 2: Try to read back the data pack that we just wrote to disk.
   {
     scoped_refptr<BrowserThemePack> pack =
         BrowserThemePack::BuildFromDataPack(file, "gllekhaobjnhgeag");
     ASSERT_TRUE(pack.get());
     VerifyHiDpiTheme(pack.get());
   }
 }