Make gn deps for extensions API registration consistent with gyp dependencies.

BUG=405226

Review URL: https://codereview.chromium.org/509143002

Cr-Commit-Position: refs/heads/master@{#292230}

chrome/common/extensions/api/BUILD.gn

@@ -20,6 +20,7 @@ generated_extensions_api("api_registration") {
     # Different APIs include some headers from chrome/common that in turn
     # include generated headers from these targets.
     # TODO(brettw) this should be made unnecessary if possible.
+    ":api",
     "//components/metrics/proto",
     "//skia",
     "//sync",

extensions/common/api/BUILD.gn

@@ -16,8 +16,11 @@ generated_extensions_api("api_registration") {
   impl_dir = "//extensions/browser/api"
   bundle_registration = true
 
-  deps = [
+  deps = [ ":api" ]
+  if (!is_android) {
+    deps += [
       "//device/serial",
       "//skia",
     ]
+  }
 }