Consolidate login keyboard layouts information into input_methods.txt.

kLoginLayoutWhitelist has a list of xkb layout ids that are allowed to
be used on login screen.
However, the same information is already in
//chromeos/ime/input_methods.txt.
This CL removes the array and use the infomation in input_methods.txt
instead.

There is a slight diff between kLoginLayoutWhitelist and
input_methods.txt.
- 'fr' is only in kLoginLayoutWhitelist and xkb_manifest.json uses it.
  I updated xkb_manifest.json to use 'fr(oss)'.
- 'ro(std)' and 'ga' is specified as login layouts in input_methods.txt,
  but not in kLoginLayoutWhitelist. They are considered as login layout
  after this CL.

Bug: None
Change-Id: Ic88846555310e3c534e64dd195bd47aa80befa42
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1490986Reviewed-by: Shu Chen <shuchen@chromium.org>
Commit-Queue: Yuichiro Hanada <yhanada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638483}

chrome/browser/resources/chromeos/input_method/xkb_manifest.json

@@ -214,7 +214,7 @@
         "fr-FR"
       ],
       "layouts": [
-        "fr"
+        "fr(oss)"
       ],
       "input_view": "inputview.html?id=fr.compact.qwerty&language=fr&passwordLayout=fr.compact.qwerty&name=keyboard_french"
     },

ui/base/ime/BUILD.gn

@@ -197,6 +197,7 @@ jumbo_component("ime") {
   if (is_chromeos) {
     deps += [
       "//chromeos",
+      "//chromeos/ime:gencode",
       "//services/ws/public/cpp/input_devices",
       "//ui/base/ime/chromeos/public/interfaces",
       "//ui/chromeos/strings",

ui/base/ime/chromeos/component_extension_ime_manager.cc

@@ -12,62 +12,13 @@
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "chromeos/constants/chromeos_switches.h"
+#include "chromeos/ime/input_methods.h"
 #include "ui/base/ime/chromeos/extension_ime_util.h"
 
 namespace chromeos {
 
 namespace {
 
-// The whitelist for enabling extension based xkb keyboards at login session.
-const char* kLoginLayoutWhitelist[] = {
-  "be",
-  "br",
-  "ca",
-  "ca(eng)",
-  "ca(multix)",
-  "ch",
-  "ch(fr)",
-  "cz",
-  "cz(qwerty)",
-  "de",
-  "de(neo)",
-  "dk",
-  "ee",
-  "es",
-  "es(cat)",
-  "fi",
-  "fr",
-  "fr(bepo)",
-  "fr(oss)",
-  "gb(dvorak)",
-  "gb(extd)",
-  "hr",
-  "hu",
-  "ie",
-  "is",
-  "it",
-  "jp",
-  "latam",
-  "lt",
-  "lv(apostrophe)",
-  "mt",
-  "no",
-  "pl",
-  "pt",
-  "ro",
-  "se",
-  "si",
-  "tr",
-  "us",
-  "us(altgr-intl)",
-  "us(colemak)",
-  "us(dvorak)",
-  "us(dvp)",
-  "us(intl)",
-  "us(workman)",
-  "us(workman-intl)"
-};
-
 // Gets the input method category according to the given input method id.
 // This is used for sorting a list of input methods.
 int GetInputMethodCategory(const std::string& id) {
@@ -116,8 +67,9 @@ ComponentExtensionIMEManagerDelegate::~ComponentExtensionIMEManagerDelegate() {
 }
 
 ComponentExtensionIMEManager::ComponentExtensionIMEManager() {
-  for (size_t i = 0; i < base::size(kLoginLayoutWhitelist); ++i) {
-    login_layout_set_.insert(kLoginLayoutWhitelist[i]);
+  for (size_t i = 0; i < base::size(input_method::kInputMethods); ++i) {
+    if (input_method::kInputMethods[i].is_login_keyboard)
+      login_layout_set_.insert(input_method::kInputMethods[i].xkb_layout_id);
   }
 }