Add remaining text/caret navigation commands to ChromeVox Next.

chrome/browser/resources/chromeos/chromevox/manifest.json.jinja2

 {
 {%if key is defined %}
   "key": "{{key}}",
 {% endif %}
   "manifest_version": 2,
   "name": "ChromeVox",
   "version": "{{set_version}}",
   "description": "ChromeVox - Giving Voice to Chrome.",
 {% if is_guest_manifest == '1' %}
   "incognito": "split",
@@ skipping 57 matching lines @@
       "suggested_key": {
         "chromeos": "Search+Right"
       }
     },
     "previousElement": {
       "description": "Moves to the previous element",
       "suggested_key": {
         "chromeos": "Search+Left"
       }
     },
+    "nextCharacter": {
+      "description": "__MSG_CHROMEVOX_NEXT_CHARACTER__",
+      "suggested_key": {
+        "chromeos": "Search+Shift+Right"
+      }
+    },
+    "previousCharacter": {
+      "description": "__MSG_CHROMEVOX_PREVIOUS_CHARACTER__",
+      "suggested_key": {
+        "chromeos": "Search+Shift+Left"
+      }
+    },
+    "nextWord": {
+      "description": "__MSG_CHROMEVOX_NEXT_WORD__",
+      "suggested_key": {
+        "chromeos": "Search+Ctrl+Shift+Right"
+      }
+    },
+    "previousWord": {
+      "description": "__MSG_CHROMEVOX_PREVIOUS_WORD__",
+      "suggested_key": {
+        "chromeos": "Search+Ctrl+Shift+Left"
+      }
+    },
     "nextLine": {
       "description": "__MSG_CHROMEVOX_NEXT_LINE__",
       "suggested_key": {
         "chromeos": "Search+Down"
       }
     },
     "previousLine": {
       "description": "__MSG_CHROMEVOX_PREVIOUS_LINE__",
       "suggested_key": {
         "chromeos": "Search+Up"
@@ skipping 39 matching lines @@
       "description": "__MSG_CHROMEVOX_TOGGLE_CHROMEVOX__",
       "suggested_key": {
         "chromeos": "Search+Ctrl+Q"
       }
     }
   },
 {% endif %}
   "options_page": "chromevox/background/options.html",
   "default_locale": "en"
 }