Files app: Handle chrome.runtime.lastError for chrome.storage API calls.

ui/file_manager/file_manager/foreground/js/app_state_controller.js

Index: ui/file_manager/file_manager/foreground/js/app_state_controller.js
diff --git a/ui/file_manager/file_manager/foreground/js/app_state_controller.js b/ui/file_manager/file_manager/foreground/js/app_state_controller.js
index 7df9810eba2d0b0bfd8e69e610503aec4d73912d..e6fcb4119d8e9b225b8137828b161ab75964b182 100644
--- a/ui/file_manager/file_manager/foreground/js/app_state_controller.js
+++ b/ui/file_manager/file_manager/foreground/js/app_state_controller.js
@@ -35,8 +35,15 @@ function AppStateController(dialogType) {
  */
 AppStateController.prototype.loadInitialViewOptions = function() {
   // Load initial view option.
-  return new Promise(function(fulfill) {
-    chrome.storage.local.get(this.viewOptionStorageKey_, fulfill);
+  return new Promise(function(fulfill, reject) {
+    chrome.storage.local.get(this.viewOptionStorageKey_, function(values) {
+      if (chrome.runtime.lastError) {
+        reject('Failed to load view options: ' +
+            chrome.runtime.lastError.message);
+      } else {
+        fulfill(values);
+      }
+    });
   }.bind(this)).then(function(values) {
     this.viewOptions_ = {};
     var value = values[this.viewOptionStorageKey_];
@@ -55,6 +62,9 @@ AppStateController.prototype.loadInitialViewOptions = function() {
           this.viewOptions_[key] = window.appState.viewOptions[key];
       }
     }
+  }.bind(this)).catch(function(error) {
+    this.viewOptions_ = {};
+    console.error(error);
   }.bind(this));
 };
 
@@ -110,7 +120,11 @@ AppStateController.prototype.saveViewOptions = function() {
   // Save the global default.
   var items = {};
   items[this.viewOptionStorageKey_] = JSON.stringify(prefs);
-  chrome.storage.local.set(items);
+  chrome.storage.local.set(items, function() {
+    if (chrome.runtime.lastError)
+      console.error('Failed to save view options: ' +
+          chrome.runtime.lastError.message);
+  });
 
   // Save the window-specific preference.
   if (window.appState) {