[Smart Lock] Remove some unused strings.

BUG=453147
R=tengs@chromium.org

Review URL: https://codereview.chromium.org/885753005

Cr-Commit-Position: refs/heads/master@{#314419}

chrome/app/generated_resources.grd

@@ -15264,12 +15264,6 @@ Do you accept?
       <message name="IDS_EASY_UNLOCK_SETUP_ERROR_FINDING_PHONE" desc="A generic catch-all error message to display when something goes wrong after the user clicks 'Find my phone' during Easy Unlock setup. Note that the &lt;a&gt; element surrounds a link; these HTML elements should be preserved in the translation.">
         Can’t find your phone. Make sure you’re using a compatible Android phone that’s turned on and within arm’s reach. &lt;a&gt;Learn more&lt;/a&gt;
       </message>
-      <message name="IDS_EASY_UNLOCK_SETUP_ERROR_BLUETOOTH_CONNECTION_FAILED" desc="The error message to display when the Bluetooth connection between the phone and the Chromebook is disconnected during Easy Unlock setup. Note that the &lt;a&gt; element surrounds a link; these HTML elements should be preserved in the translation.">
-        Couldn’t establish a connection with your phone. Make sure Bluetooth is turned on for both of your devices. &lt;a&gt;Learn more&lt;/a&gt;
-      </message>
-      <message name="IDS_EASY_UNLOCK_SETUP_ERROR_CONNECT_TO_PHONE_TIMEOUT" desc="The error message to display when the Chromebook is unable to establish connection to the phone within a reasonable amount of time. Note that the &lt;a&gt; element surrounds a link; these HTML elements should be preserved in the translation.">
-        Couldn’t establish a connection with your phone. Make sure you’re using a compatible Android phone that is turned on and within arm’s reach. &lt;a&gt;Learn more&lt;/a&gt;
-      </message>
       <message name="IDS_EASY_UNLOCK_SETUP_ERROR_SYNC_PHONE_STATE_FAILED" desc="The error message to display when the Chromebook fails to sync the phone's state.">
         Smart Lock is currently unavailable. Please try again later.
       </message>

chrome/browser/extensions/api/easy_unlock_private/easy_unlock_private_api.cc

@@ -306,20 +306,6 @@ bool EasyUnlockPrivateGetStringsFunction::RunSync() {
   strings->SetString(
       "setupErrorFindingPhone",
       l10n_util::GetStringUTF16(IDS_EASY_UNLOCK_SETUP_ERROR_FINDING_PHONE));
-  // TODO(isherman): Remove the setupErrorBluetoothConnectionFailed string; it
-  // is unused.
-  strings->SetString(
-      "setupErrorBluetoothConnectionFailed",
-      l10n_util::GetStringFUTF16(
-          IDS_EASY_UNLOCK_SETUP_ERROR_BLUETOOTH_CONNECTION_FAILED,
-          device_type));
-  // TODO(isherman): Remove the setupErrorConnectionToPhoneTimeout string; it is
-  // identical to the setupErrorConnectingToPhone string, and hence obsolete.
-  strings->SetString(
-      "setupErrorConnectionToPhoneTimeout",
-       l10n_util::GetStringFUTF16(
-           IDS_EASY_UNLOCK_SETUP_ERROR_CONNECT_TO_PHONE_TIMEOUT,
-           device_type));
   strings->SetString(
       "setupErrorSyncPhoneState",
        l10n_util::GetStringUTF16(
@@ -329,9 +315,6 @@ bool EasyUnlockPrivateGetStringsFunction::RunSync() {
       l10n_util::GetStringFUTF16(
           IDS_EASY_UNLOCK_SETUP_ERROR_CONNECTING_TO_PHONE, device_type));
 
-  // TODO(isherman): Remove this string once the app has been updated.
-  strings->SetString("setupIntroHeaderFootnote", base::string16());
-
   SetResult(strings.release());
   return true;
 }