Enables new Korean IME by default for M44.

TBR=suzhe@chromium.org
BUG=407456
TEST=Verified on linux_chromeos & clapper device.

Review URL: https://codereview.chromium.org/1132333002

Cr-Commit-Position: refs/heads/master@{#329810}

chrome/app/generated_resources.grd

@@ -14473,11 +14473,11 @@ After you create a new supervised user, you can manage their settings at any tim
           Disable input view keyboards in material design.
         </message>
 
-        <message name="IDS_FLAGS_ENABLE_NEW_KOREAN_IME_NAME" desc="Name of about::flags option to enable the new Korean IME">
-          Enable new Korean IME.
+        <message name="IDS_FLAGS_DISABLE_NEW_KOREAN_IME_NAME" desc="Name of about::flags option to disable the new Korean IME">
+          Disable new Korean IME.
         </message>
-        <message name="IDS_FLAGS_ENABLE_NEW_KOREAN_IME_DESCRIPTION" desc="Description of about::flags option to enable the new Korean IME">
-          Enable new Korean IME, which is based on Google Input Tools' HMM engine.
+        <message name="IDS_FLAGS_DISABLE_NEW_KOREAN_IME_DESCRIPTION" desc="Description of about::flags option to disable the new Korean IME">
+          Disable new Korean IME, which is based on Google Input Tools' HMM engine.
         </message>
 
         <message name="IDS_FLAGS_ENABLE_PHYSICAL_KEYBOARD_AUTOCORRECT_NAME" desc="Name of about::flags option to enable physical keyboard autocorrect for US keyboard">

chrome/browser/about_flags.cc

@@ -1410,11 +1410,11 @@ const Experiment kExperiments[] = {
                               keyboard::switches::kDisableInputView)
   },
   {
-    "enable-new-korean-ime",
-    IDS_FLAGS_ENABLE_NEW_KOREAN_IME_NAME,
-    IDS_FLAGS_ENABLE_NEW_KOREAN_IME_DESCRIPTION,
+    "disable-new-korean-ime",
+    IDS_FLAGS_DISABLE_NEW_KOREAN_IME_NAME,
+    IDS_FLAGS_DISABLE_NEW_KOREAN_IME_DESCRIPTION,
     kOsCrOS,
-    SINGLE_VALUE_TYPE(chromeos::switches::kEnableNewKoreanIme)
+    SINGLE_VALUE_TYPE(chromeos::switches::kDisableNewKoreanIme)
   },
   {
     "disable-new-md-input-view",

chrome/browser/browser_resources.grd

@@ -442,8 +442,8 @@
           <include name="IDR_ZHUYIN_MANIFEST" file="resources\chromeos\input_method\zhuyin_manifest.json" type="BINDATA" />
           <include name="IDR_CANGJIE_MANIFEST" file="resources\chromeos\input_method\cangjie_manifest.json" type="BINDATA" />
           <include name="IDR_MOZC_MANIFEST" file="resources\chromeos\input_method\mozc_manifest.json" type="BINDATA" />
+          <include name="IDR_HANGUL_MANIFEST" file="resources\chromeos\input_method\hangul_manifest.json" type="BINDATA" />
         </if>
-        <include name="IDR_HANGUL_MANIFEST" file="resources\chromeos\input_method\hangul_manifest.json" type="BINDATA" />
         <include name="IDR_BRAILLE_MANIFEST" file="resources\chromeos\braille_ime\manifest.json" type="BINDATA" />
       </if>
       <include name="IDR_WHISPERNET_PROXY_MANIFEST" file="resources\whispernet_proxy\manifest.json" type="BINDATA" />

chromeos/chromeos_switches.cc

@@ -111,9 +111,9 @@ const char kEnableConsumerManagement[] = "enable-consumer-management";
 // If this switch is set, the device cannot be remotely disabled by its owner.
 const char kDisableDeviceDisabling[] = "disable-device-disabling";
 
-// If this switch is set, the new Korean IME will be available in
+// If this switch is set, the new Korean IME will not be available in
 // chrome://settings/languages.
-const char kEnableNewKoreanIme[] = "enable-new-korean-ime";
+const char kDisableNewKoreanIme[] = "disable-new-korean-ime";
 
 // Disables mtp write support.
 const char kDisableMtpWriteSupport[] = "disable-mtp-write-support";

chromeos/chromeos_switches.h

@@ -61,7 +61,7 @@ CHROMEOS_EXPORT extern const char kEnableFirewallHolePunching[];
 CHROMEOS_EXPORT extern const char kEnableFirstRunUITransitions[];
 CHROMEOS_EXPORT extern const char kEnableKioskMode[];
 CHROMEOS_EXPORT extern const char kEnableNetworkPortalNotification[];
-CHROMEOS_EXPORT extern const char kEnableNewKoreanIme[];
+CHROMEOS_EXPORT extern const char kDisableNewKoreanIme[];
 CHROMEOS_EXPORT extern const char kEnablePhysicalKeyboardAutocorrect[];
 CHROMEOS_EXPORT extern const char kEnablePrinterAppSearch[];
 CHROMEOS_EXPORT extern const char kEnableRequestTabletSite[];

tools/metrics/histograms/histograms.xml

@@ -56630,6 +56630,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="834326277" label="enable-answers-in-suggest"/>
   <int value="835018878" label="disable-quic"/>
   <int value="838887742" label="manual-enhanced-bookmarks"/>
+  <int value="841343322" label="disable-new-korean-ime"/>
   <int value="851085848" label="enable-settings-window"/>
   <int value="855746780" label="disable-physical-keyboard-autocorrect"/>
   <int value="857445869" label="enable-captive-portal-bypass-proxy"/>

ui/base/ime/chromeos/component_extension_ime_manager.cc

@@ -166,8 +166,8 @@ bool ComponentExtensionIMEManager::IsWhitelistedExtension(
 input_method::InputMethodDescriptors
     ComponentExtensionIMEManager::GetAllIMEAsInputMethodDescriptor() {
   bool enable_new_korean_ime =
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableNewKoreanIme);
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableNewKoreanIme);
   input_method::InputMethodDescriptors result;
   for (std::map<std::string, ComponentExtensionIME>::const_iterator it =
           component_extension_imes_.begin();