Changed host and NPAPI extension permission strings (access -> read and modify), updated unit tests

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 4248 matching lines @@
       </message>
       </if>
       <if expr="lang != 'ar'">
       <message translateable="false" name="IDS_EXTENSION_PROMPT_RETAINED_FILES_MANY" desc="">
         NA
       </message>
       </if>
 
       <if expr="is_android">
         <message name="IDS_EXTENSION_PROMPT_WARNING_FULL_ACCESS" desc="Mobile: Permission string for full access to the device and all websites.">
-          Access all data on your device and the websites you visit
+          Read and modify all your data on your device and the websites you visit
         </message>
       </if>
       <if expr="not is_android">
         <message name="IDS_EXTENSION_PROMPT_WARNING_FULL_ACCESS" desc="Permission string for full access to the computer and all websites.">
-          Access all data on your computer and the websites you visit
+          Read and modify all your data on your computer and the websites you visit
         </message>
       </if>
       <message name="IDS_EXTENSION_PROMPT_WARNING_ALL_HOSTS" desc="Permission string for access to data on all websites.">
-        Access your data on all websites
+        Read and modify all your data on the websites you visit
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_FAVICON" desc="Permission string for access to favicons.">
         Access the icons of the websites you visit
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_INPUT" desc="Permission string for access to input.">
         Access anything you type
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_BOOKMARKS" desc="Permission string for access to bookmarks.">
         Read and modify your bookmarks
       </message>
@@ skipping 9853 matching lines @@
     <message name="IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_ENFORCE" desc="Description of the 'Extension Content Verification' enforce mode">
       Enforce (try to get hashes, and enforce them if successful)
     </message>
 
     <message name="IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_ENFORCE_STRICT" desc="Description of the 'Extension Content Verification' enforce strict mode">
       Enforce strict (hard fail if we can't get hashes)
     </message>
   </messages>
   </release>
 </grit>