[MacViews] Implemented text context menu

ui/strings/ui_strings.grd

Index: ui/strings/ui_strings.grd
diff --git a/ui/strings/ui_strings.grd b/ui/strings/ui_strings.grd
index 52beafe384892ccbbab9bd45d63262899ffd767b..073203b0a0b7ed32674f263c2e631745b131849c 100644
--- a/ui/strings/ui_strings.grd
+++ b/ui/strings/ui_strings.grd
@@ -295,6 +295,17 @@ need to be translated for each locale.-->
         <message name="IDS_SELECT_UPLOAD_FOLDER_BUTTON_TITLE" desc="The name of the Select button in the folder selection dialog for uploading.">
           Upload
         </message>
+
+         <!-- Edit::Speech submenu -->
+        <message name="IDS_SPEECH_MAC" desc="The Mac menu item for the 'Speech' submenu in the edit and context menu. To translate, launch /Applications/TextEdit.app in an appropriately localized version of OS X, open the Edit menu and use the translation from there.">
+          Speech
+        </message>
+        <message name="IDS_SPEECH_START_SPEAKING_MAC" desc="The Mac menu item for the 'Start Speaking' item from the 'Speech' submenu in edit and context menu. To translate, launch /Applications/TextEdit.app in an appropriately localized version of OS X, open the Edit menu and use the translation from there.">
+          Start Speaking
+        </message>
+        <message name="IDS_SPEECH_STOP_SPEAKING_MAC" desc="The Mac menu item for the 'Stop Speaking' item from the 'Speech' submenu in edit and context menu. To translate, launch /Applications/TextEdit.app in an appropriately localized version of OS X, open the Edit menu and use the translation from there.">
+          Stop Speaking
+        </message>
       </if>
 
       <!-- File chooser dialog default titles (only used on Linux) -->