Fix fatal error: 'components/omnibox/browser/buildflags.h' file not found

Fixes the following error message:

FAILED: obj/chrome/browser/extensions/api/api_registration/generated_api_registration.o
In file included from gen/chrome/browser/extensions/api/generated_api_registration.cc:63:
In file included from ../../chrome/browser/extensions/api/omnibox/omnibox_api.h:18:
../../components/omnibox/browser/autocomplete_match.h:20:10: fatal error:
    'components/omnibox/browser/buildflags.h' file not found
1 error generated.

patch/patch.cfg

@@ -216,6 +216,12 @@ patches = [
     # https://bitbucket.org/chromiumembedded/cef/issues/2852
     'name': 'chrome_browser_themes',
   },
+  {
+    # Fix fatal error: 'components/omnibox/browser/buildflags.h' file not found
+    # From chrome/browser/extensions/api/omnibox/omnibox_api.h via
+    # gen/chrome/browser/extensions/api/generated_api_registration.cc
+    'name': 'chrome_browser_extensions',
+  },
   {
     # Make some methods of ProfileManager virtual.
     #

patch/patches/chrome_browser_extensions.patch

@@ -0,0 +1,12 @@
+diff --git chrome/browser/extensions/api/BUILD.gn chrome/browser/extensions/api/BUILD.gn
+index 82da6124bc6f..0e20d4191ec4 100644
+--- chrome/browser/extensions/api/BUILD.gn
++++ chrome/browser/extensions/api/BUILD.gn
+@@ -22,6 +22,7 @@ function_registration("api_registration") {
+   deps = [
+     # Different APIs include headers from these targets.
+     "//chrome/common:mojo_bindings",
++    "//components/omnibox/browser",
+     "//components/zoom",
+     "//content/public/browser",
+     "//extensions/browser",