Add emoji inserted ChromeVox string

Let's get the string in first. I will decide on the method signature
later.

Bug: 1113612, 1119570
Change-Id: I7fab36cfa1a16ca0d9f48144ae596153dc308ffe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2365513Reviewed-by: Darren Shen <shend@chromium.org>
Commit-Queue: My Nguyen <myy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799931}

chrome/app/chromeos_strings.grdp

@@ -5697,6 +5697,12 @@ You can manage this account’s settings by installing the Family Link app on yo
   <message name="IDS_SUGGESTION_DISMISSED" desc="String announced by screenreader when suggestion pop-up disappears.">
     Suggestion dismissed
   </message>
+  <message name="IDS_SUGGESTION_EMOJI_INSERTED" desc="String announced by screenreader when an emoji suggestion is inserted.">
+    Emoji inserted
+  </message>
+  <message name="IDS_SUGGESTION_INSERTED" desc="String announced by screenreader when a suggestion is inserted.">
+    Suggestion inserted
+  </message>
 
   <!-- Strings for Custom Tab UI -->
   <message name="IDS_CUSTOM_TABS_ACTION_MENU_ACCESSIBLE_NAME" desc="Accessible name for the overflow menu of the Chrome Custom Tab toolbar.">

chrome/app/chromeos_strings_grdp/IDS_SUGGESTION_EMOJI_INSERTED.png.sha1

+a6b8756e9be63c0e3ea06369375dfc013d505870
\ No newline at end of file

chrome/app/chromeos_strings_grdp/IDS_SUGGESTION_INSERTED.png.sha1

+a6b8756e9be63c0e3ea06369375dfc013d505870
\ No newline at end of file

chrome/browser/chromeos/input_method/assistive_window_controller.cc

@@ -15,8 +15,10 @@
 #include "chrome/browser/chromeos/input_method/assistive_window_properties.h"
 #include "chrome/browser/chromeos/input_method/ui/suggestion_details.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/grit/generated_resources.h"
 #include "components/prefs/pref_service.h"
 #include "ui/base/ime/chromeos/ime_bridge.h"
+#include "ui/base/l10n/l10n_util.h"
 #include "ui/views/widget/widget.h"
 
 namespace chromeos {
@@ -123,10 +125,16 @@ void AssistiveWindowController::OnWidgetClosing(views::Widget* widget) {
   }
 }
 
+// TODO(crbug/1119570): Update AcceptSuggestion signature (either use
+// announce_string, or no string)
 void AssistiveWindowController::AcceptSuggestion(
     const base::string16& suggestion) {
-  tts_handler_->Announce(base::StringPrintf(
-      "%s inserted.", base::UTF16ToUTF8(suggestion).c_str()));
+  if (window_.type == ui::ime::AssistiveWindowType::kEmojiSuggestion) {
+    tts_handler_->Announce(
+        l10n_util::GetStringUTF8(IDS_SUGGESTION_EMOJI_SUGGESTED));
+  } else {
+    tts_handler_->Announce(l10n_util::GetStringUTF8(IDS_SUGGESTION_INSERTED));
+  }
   HideSuggestion();
 }
 
@@ -211,7 +219,7 @@ void AssistiveWindowController::SetAssistiveWindowProperties(
         InitUndoWindow();
       if (window.visible) {
         undo_window_->SetAnchorRect(bounds_.autocorrect.IsEmpty()
-                                        ? bounds_.caret 
+                                        ? bounds_.caret
                                         : bounds_.autocorrect);
         undo_window_->Show();
       } else {