Add an experimental permissions API for extensions.

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 404e58bedf7a4c476295dc9d30bd799c42153c3a..7382d99e9edef1f9304d05522a82f99abe9b8e63 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -3672,6 +3672,9 @@ are declared in build/common.gypi.
       <message name="IDS_EXTENSION_RE_ENABLE_PROMPT_TITLE" desc="Titlebar of the extension or app prompt window when re-enabling an extension that requires additional permissions">
         Confirm Re-enable
       </message>
+      <message name="IDS_EXTENSION_PERMISSIONS_PROMPT_TITLE" desc="Titlebar of the extension or app permissions prompt window">
+        Confirm Permissions
+      </message>
       <message name="IDS_EXTENSION_INSTALL_PROMPT_HEADING" desc="First bold line in the content area of the extension or app installation prompt. Asks the user if they want to install a particular extension or app.">
         Install <ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph>?
       </message>
@@ -3681,6 +3684,9 @@ are declared in build/common.gypi.
       <message name="IDS_EXTENSION_RE_ENABLE_PROMPT_HEADING" desc="First bold line in the content area of the extension or app installation prompt. Asks the user if they want to re-enable a particular extension or app.">
         The newest version of "<ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph>" has been disabled because it requires more permissions.
       </message>
+      <message name="IDS_EXTENSION_PERMISSIONS_PROMPT_HEADING" desc="First bold line in the content area of the extension or app permissions prompt. Asks the user if they want to grant the permissions to the particular extension or app.">
+        The extension "<ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph>" has requested additional permissions.
+      </message>
 
       <!-- Extension/App install dialog strings -->
       <message name="IDS_EXTENSION_PROMPT_WILL_HAVE_ACCESS_TO" desc="Second line in the content area of the extension or app installation prompt. Note that the exact wording is important. This should mean that the extension or app _can_ access the listed privileges, but not necessarily that it will or needs to.">
@@ -3689,6 +3695,10 @@ are declared in build/common.gypi.
       <message name="IDS_EXTENSION_PROMPT_WILL_NOW_HAVE_ACCESS_TO" desc="Second line in the content area of the extension or app re-enable prompt. Note that the exact wording is important. This should mean that the extension _can now_ access the listed privileges, but not necessarily that it will or needs to. This message appeared because the user must approve new permissions of the extension or app.">
         It can now access:
       </message>
+      <message name="IDS_EXTENSION_PROMPT_WANTS_ACCESS_TO" desc="Second line in the content area of the extension or app permissions prompt. Note that the exact wording is important. This should mean that the extension _wants to_ access the listed privileges, but not necessarily that it will or needs to. This message appeared because the user must approve new permissions of the extension or app.">
+        It could access:
+      </message>
+
       <message name="IDS_EXTENSION_PROMPT_WARNING_FULL_ACCESS" desc="Permission string for full access to the computer and all websites.">
         All data on your computer and the websites you visit
       </message>
@@ -4033,6 +4043,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_EXTENSION_PROMPT_RE_ENABLE_BUTTON" desc="Text for the enable button on the extension re-enable prompt">
         Re-enable
       </message>
+      <message name="IDS_EXTENSION_PROMPT_PERMISSIONS_BUTTON" desc="Text for the allow button on the extension permissions prompt">
+        Allow
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_PERMISSIONS_ABORT_BUTTON" desc="Text for the deny button on the extension permissions prompt">
+        Deny
+      </message>
       <message name="IDS_EXTENSION_WEB_STORE_TITLE" desc="Text for the Chrome Web Store">
         Web Store
       </message>
@@ -7736,7 +7752,7 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_AUTOFILL_HELP_LABEL" desc="The label of the Help link on the Autofill dialog.">
         About Autofill
       </message>
-      
+
       <message name="IDS_AUTOFILL_SHOW_PREDICTIONS_TITLE" desc="The title for form elements when annotated with Autofill predictions.">
         heuristic type: <ph name="HEURISTIC_TYPE">$1<ex>NAME_FIRST</ex></ph>\nserver type: <ph name="SERVER_TYPE">$2<ex>NAME_FIRST</ex></ph>\nfield signature: <ph name="FIELD_SIGNATURE">$3<ex>12345678</ex></ph>\nform signature: <ph name="FORM_SIGNATURE">$4<ex>1234567812345678</ex></ph>\nexperiment id: "<ph name="EXPERIMENT_ID">$5<ex>ar1</ex></ph>"
       </message>
@@ -8287,7 +8303,7 @@ Keep your key file in a safe place. You will need it to create new versions of y
       </message>
       <message name="IDS_APP_DEFAULT_PAGE_NAME"
                desc="Default name for the first 'Apps' page on the New Tab Page.">
-        Apps 
+        Apps
       </message>
       <message name="IDS_APP_CONTEXT_MENU_OPEN_PINNED"
                desc="Text for the button that opens the app in a pinned tab.">