Adding MimeHandlerView.

extensions/extensions_strings.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
   Strings for the extensions module. Used mostly for low-level error messages.
   Where possible new strings should be kept in Chrome and the extensions module
   should return an error code, message flag, etc.
 -->
 
 <grit latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
@@ skipping 293 matching lines @@
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_USB_DEVICE_MISSING_VENDOR" desc="Permission string for access to a specific USB device when a vendor name cannot be established for a USB device.">
         Access the USB device
       </message>
       <message name="IDS_EXTENSION_TASK_MANAGER_APPVIEW_TAG_PREFIX" desc="The prefix for a guest page loaded in an appview tag in the Task Manager">
         Appview: <ph name="APPVIEW_TAG_NAME">$1<ex>Google Hangouts</ex></ph>
       </message>
       <message name="IDS_EXTENSION_TASK_MANAGER_EXTENSIONOPTIONS_TAG_PREFIX" desc="The prefix for a guest page loaded in an extensionoptions tag in the Task Manager">
         Options: <ph name="EXTENSIONOPTIONS_TAG_NAME">$1<ex>Google Hangouts</ex></ph>
       </message>
+      <message name="IDS_EXTENSION_TASK_MANAGER_MIMEHANDLERVIEW_TAG_PREFIX" desc="The prefix for a guest page loaded in a mime handler view page in the task manager">
+        Mimehandler: <ph name="MIMEHANDLERVIEW_TAG_NAME">$1<ex>My mime handler view</ex></ph>
+      </message>
       <message name="IDS_EXTENSION_TASK_MANAGER_WEBVIEW_TAG_PREFIX" desc="The prefix for a guest page loaded in a webview tag in the Task Manager">
         Webview: <ph name="WEBVIEW_TAG_NAME">$1<ex>Google</ex></ph>
       </message>
 
       <!-- Global error messages for extensions. Please keep alphabetized. -->
       <message name="IDS_EXTENSION_WARNINGS_NETWORK_DELAY" desc="Warning message indicating that an extension caused excessive network delays for web requests">
         This extension is slowing down <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>. You should disable it to restore <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph>'s performance.
       </message>
       <message name="IDS_EXTENSION_WARNINGS_NETWORK_CONFLICT" desc="Warning message which indicates that two or more extensions tried to modify a network request in a conflicting way and the modification of this extension was ignored">
         This extension failed to modify a network request because the modification conflicted with another extension.
@@ skipping 15 matching lines @@
       </message>
       <message name="IDS_EXTENSION_WARNING_RELOAD_TOO_FREQUENT" desc="Warning message which indates that an extension got stuck in a reload loop.">
         This extension reloaded itself too frequently.
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_U2F_DEVICES" desc="Warning message which indicates that an extension has access to Universal 2nd Factor devices.">
         Access your Universal 2nd Factor devices
       </message>
     </messages>
   </release>
 </grit>