Fixup ChromeVox image paths

Fixed: 1057983
TBR=anastasi@google.com

Change-Id: I50185e3bf875caec41ced281c10ff308eca08824
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2085151Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746538}

chrome/browser/resources/chromeos/accessibility/chromevox/background/notifications.js

@@ -17,7 +17,7 @@ const UpdateNotification = class {
   constructor() {
     this.data = {};
     this.data.type = 'basic';
-    this.data.iconUrl = '/images/chromevox-16.png';
+    this.data.iconUrl = '/chromevox/images/chromevox-16.png';
     this.data.title = Msgs.getMsg('update_title');
     this.data.message = Msgs.getMsg('update_message_new');
   }

chrome/browser/resources/chromeos/accessibility/chromevox/panel/panel.css

@@ -55,24 +55,24 @@ button {
 }
 
 #options {
-  background-image: url(/images/options-19.png);
+  background-image: url(/chromevox/images/options-19.png);
   height: 19px;
   margin: 8px 0;
   width: 19px;
 }
 
 #options:hover {
-  background-image: url(/images/options-hover-19.png);
+  background-image: url(/chromevox/images/options-hover-19.png);
 }
 
 #close {
-  background-image: url(/images/close-19.png);
+  background-image: url(/chromevox/images/close-19.png);
   height: 19px;
   width: 19px;
 }
 
 #close:hover {
-  background-image: url(/images/close-hover-19.png);
+  background-image: url(/chromevox/images/close-hover-19.png);
 }
 
 #caption {
@@ -299,7 +299,7 @@ button {
 }
 
 #close_tutorial {
-  background-image: url(/images/close-19.png);
+  background-image: url(/chromevox/images/close-19.png);
   height: 19px;
   position: fixed;
   right: 0;
@@ -308,7 +308,7 @@ button {
 }
 
 #close:hover {
-  background-image: url(/images/close-hover-19.png);
+  background-image: url(/chromevox/images/close-hover-19.png);
 }
 
 #tutorial_main {

chrome/browser/resources/chromeos/accessibility/chromevox_manifest.json.jinja2

@@ -61,9 +61,9 @@
   "options_page": "chromevox/options/options.html",
   "default_locale": "en",
   "icons": {
-    "16": "images/chromevox-16.png",
-    "48": "images/chromevox-48.png",
-    "128": "images/chromevox-128.png"
+    "16": "chromevox/images/chromevox-16.png",
+    "48": "chromevox/images/chromevox-48.png",
+    "128": "chromevox/images/chromevox-128.png"
   },
   "content_security_policy": "default-src 'none'; script-src 'self' chrome://resources; style-src 'unsafe-inline' chrome://resources;",
   "externally_connectable": {