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

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 57ff983140d95d69041a7b97c62323b84f6739dc..e64a8596c3bb761b65b06b39a99c73691427a6ae 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4266,16 +4266,16 @@ Make sure you do not expose any sensitive information.
 
       <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