Make COLOR_CONTROL_BACKGROUND customizable from a theme extension

chrome/browser/themes/browser_theme_pack_unittest.cc

Index: chrome/browser/themes/browser_theme_pack_unittest.cc
diff --git a/chrome/browser/themes/browser_theme_pack_unittest.cc b/chrome/browser/themes/browser_theme_pack_unittest.cc
index c79c6c2031c1cfcb86b6a8d2b67b8b1a96e4d3e4..7d0880facbb46346aae3239e95fb03dd7f5ec26e 100644
--- a/chrome/browser/themes/browser_theme_pack_unittest.cc
+++ b/chrome/browser/themes/browser_theme_pack_unittest.cc
@@ -213,6 +213,10 @@ class BrowserThemePackTest : public ::testing::Test {
                                &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);
@@ -247,9 +251,6 @@ class BrowserThemePackTest : public ::testing::Test {
     EXPECT_FALSE(pack->HasCustomImage(IDR_THEME_TAB_BACKGROUND_INCOGNITO));
 #endif
 
-    // Make sure we don't have phantom data.

[Peter Kasting, 2016/06/10 01:12:24]

Why did this comment disappear?

[Julien Isorce Samsung, 2016/06/10 09:51:37]

Oups, I'll add it back. Thx

-    EXPECT_FALSE(pack->GetColor(ThemeProperties::COLOR_CONTROL_BACKGROUND,
-                                &color));
     EXPECT_FALSE(pack->GetTint(ThemeProperties::TINT_FRAME, &actual));
   }