Refactor RenderThemeChromiumDefault

Source/core/BUILD.gn

Index: Source/core/BUILD.gn
diff --git a/Source/core/BUILD.gn b/Source/core/BUILD.gn
index 6365767fcf49c4477169e835b2cbda1f2877879d..b0d7f069ad6a1e35537390d277c4abdbd9fb067b 100644
--- a/Source/core/BUILD.gn
+++ b/Source/core/BUILD.gn
@@ -239,12 +239,20 @@ source_set("remaining") {
   } else {  # !is_win
     sources -= [
       "rendering/RenderThemeChromiumFontProviderWin.cpp",
+      "rendering/RenderThemeChromiumWin.cpp",
+      "rendering/RenderThemeChromiumWin.h",
     ]
   }
-  if (!is_linux && !is_android) {
+  if (!is_linux) {
     sources -= [
-      "rendering/RenderThemeChromiumFontProviderLinux.cpp",
+      "rendering/RenderThemeChromiumLinux.cpp",
+      "rendering/RenderThemeChromiumLinux.h",
     ]
+    if (!is_android) {
+      sources -= [
+        "rendering/RenderThemeChromiumFontProviderLinux.cpp",
+      ]
+    }
   }
 
   if (is_android) {