Support building the chome target with enable_cef=false

patch/patches/gn_config.patch

@@ -12,17 +12,27 @@ index 0c25000917fb..cdaf3a6799c2 100644
        # https://crbug.com/474506.
        "//clank/java/BUILD.gn",
 diff --git BUILD.gn BUILD.gn
-index 86c82ac5cf8a..e355bb940181 100644
+index 86c82ac5cf8a..ea0959f631b4 100644
 --- BUILD.gn
 +++ BUILD.gn
-@@ -234,6 +234,7 @@ group("gn_all") {
- 
-   if (!is_ios && !is_fuchsia) {
+@@ -16,6 +16,7 @@ import("//build/config/sanitizers/sanitizers.gni")
+ import("//build/config/ui.gni")
+ import("//build/gn_logs.gni")
+ import("//build/util/generate_wrapper.gni")
++import("//cef/libcef/features/features.gni")
+ import("//chrome/browser/buildflags.gni")
+ import("//chrome/browser/media/router/features.gni")
+ import("//components/nacl/features.gni")
+@@ -244,6 +245,9 @@ group("gn_all") {
+       "//third_party/angle/src/tests:angle_white_box_tests",
+       "//third_party/catapult/telemetry:bitmaptools($host_toolchain)",
+     ]
++    if (enable_cef) {
++      deps += [ "//cef" ]
++    }
+   } else if (is_ios) {
      deps += [
-+      "//cef",
-       "//chrome/test:telemetry_perf_unittests",
-       "//chrome/test:unit_tests",
-       "//components:components_browsertests",
+       "//ios:all",
 diff --git build/config/win/visual_studio_version.gni build/config/win/visual_studio_version.gni
 index 982fbe8d3f0d..e757be4688f1 100644
 --- build/config/win/visual_studio_version.gni
@@ -55,6 +65,19 @@ index 982fbe8d3f0d..e757be4688f1 100644
 +         "You must set the visual_studio_runtime_dirs if you set the visual " +
 +         "studio path")
  }
+diff --git chrome/app/framework.order chrome/app/framework.order
+index 839144aa1e9b..29c8ab32398a 100644
+--- chrome/app/framework.order
++++ chrome/app/framework.order
+@@ -28,3 +28,8 @@ _ChromeMain
+ _lprofDirMode
+ ___llvm_profile_filename
+ ___llvm_profile_raw_version
++
++# Symbols exported for CEF.
++_OBJC_CLASS_$_UnderlayOpenGLHostingWindow
++_OBJC_METACLASS_$_UnderlayOpenGLHostingWindow
++
 diff --git chrome/chrome_paks.gni chrome/chrome_paks.gni
 index 6ad9c87a3adf..33716990c792 100644
 --- chrome/chrome_paks.gni