Adds 2 flags for input method features.

1) --enable-new-korean-ime, which is for new Korean IME based on Google Input Tools.
2) --enable-physical-keyboard-autocorrect, which is for suggestions on typing with physical keyboard.

For enable-physical-keyboard-autocorrect, the extension JS will use inputMethodPrivate.getInputMethodConfig API to read the flag value and turn on the feature accordingly.

BUG=422869
TEST=Verified on linux_chromeos.

Review URL: https://codereview.chromium.org/676593004

Cr-Commit-Position: refs/heads/master@{#300892}

1 files changed, 7 insertions, 0 deletions

diff --git a/chromeos/ime/component_extension_ime_manager.cc b/chromeos/ime/component_extension_ime_manager.cc
index a83c6c4..9a8cce1 100644
--- a/chromeos/ime/component_extension_ime_manager.cc
+++ b/chromeos/ime/component_extension_ime_manager.cc
@@ -4,8 +4,10 @@
 
 #include "chromeos/ime/component_extension_ime_manager.h"
 
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
+#include "chromeos/chromeos_switches.h"
 #include "chromeos/ime/extension_ime_util.h"
 
 namespace chromeos {
@@ -141,6 +143,8 @@ bool ComponentExtensionIMEManager::IsWhitelistedExtension(
 
 input_method::InputMethodDescriptors
     ComponentExtensionIMEManager::GetAllIMEAsInputMethodDescriptor() {
+  bool enable_new_korean_ime = CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableNewKoreanIme);
   input_method::InputMethodDescriptors result;
   for (std::map<std::string, ComponentExtensionIME>::const_iterator it =
           component_extension_imes_.begin();
@@ -148,6 +152,9 @@ input_method::InputMethodDescriptors
     const ComponentExtensionIME& ext = it->second;
     for (size_t j = 0; j < ext.engines.size(); ++j) {
       const ComponentExtensionEngine& ime = ext.engines[j];
+      // Filter out new Korean IME if the experimental flag is OFF.
+      if (!enable_new_korean_ime && ime.engine_id == "ko-t-i0-und")
+        continue;
       const std::string input_method_id =
           extension_ime_util::GetComponentInputMethodID(
               ext.id, ime.engine_id);