Initial redesign of the Files.app's main window.

chrome/browser/resources/file_manager/manifest_new_ui.json

Index: chrome/browser/resources/file_manager/manifest_new_ui.json
diff --git a/chrome/browser/resources/file_manager/manifest_new_ui.json b/chrome/browser/resources/file_manager/manifest_new_ui.json
index 8b2e4dd6e5007817342191246e074c933b3afdcb..24d59bdbb28885fe7b9b1c67aba22171d6120d2a 100644
--- a/chrome/browser/resources/file_manager/manifest_new_ui.json
+++ b/chrome/browser/resources/file_manager/manifest_new_ui.json
@@ -181,7 +181,7 @@
     }
   ],
   "chrome_url_overrides": {
-    "files": "main.html"
+    "files": "main_new_ui.html"
   },
   "app": {
     "background": {
@@ -191,6 +191,7 @@
         "js/util.js",
         "js/background.js"]
     },
-    "content_security_policy": "default-src 'none'; script-src 'self'; style-src 'self' 'unsafe-inline'; frame-src 'self' about:; img-src 'self' chrome://resources chrome://theme data: https://docs.google.com https://*.googleusercontent.com chrome://extension-icon; media-src 'self' https://*.googleusercontent.com; connect-src https://drive.google.com"
+    // chrome-extension://pmfjbimdmchhbnneeidfognadeopoehp is the image loader extension.
+    "content_security_policy": "default-src 'none'; script-src 'self' chrome://resources chrome-extension://pmfjbimdmchhbnneeidfognadeopoehp; style-src 'self' 'unsafe-inline' chrome://resources; frame-src 'self' about:; img-src 'self' chrome://resources chrome://theme data: https://docs.google.com https://*.googleusercontent.com chrome://extension-icon; media-src 'self' https://*.googleusercontent.com; connect-src https://drive.google.com"
   }
 }