Add USB devices to the content settings page.

chrome/browser/ui/webui/options/content_settings_handler.h

Index: chrome/browser/ui/webui/options/content_settings_handler.h
diff --git a/chrome/browser/ui/webui/options/content_settings_handler.h b/chrome/browser/ui/webui/options/content_settings_handler.h
index 3cd3e566cb307296a768af528de76907d710cd3d..03ecb4259b38cc2e1209a4e5d3f96fc20d6f07c8 100644
--- a/chrome/browser/ui/webui/options/content_settings_handler.h
+++ b/chrome/browser/ui/webui/options/content_settings_handler.h
@@ -21,6 +21,7 @@
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
+struct ChooserTypeNameEntry;
 class HostContentSettingsMap;
 class ProtocolHandlerRegistry;
 
@@ -149,6 +150,14 @@ class ContentSettingsHandler : public OptionsPageUIHandler,
   // Clobbers and rebuilds just the MIDI SysEx exception table.
   void UpdateMIDISysExExceptionsView();
 
+  // Clobbers and rebuilds all chooser-based exception tables.
+  void UpdateAllChooserExceptionsViewsFromModel();
+
+  // Clobbers and rebuilds the exception table for a particular chooser-based
+  // permission.
+  void UpdateChooserExceptionsViewFromModel(
+      const ChooserTypeNameEntry& chooser_type);
+
   // Modifies the zoom level exceptions list to display correct chrome
   // signin page entry. When the legacy (non-WebView-based) signin page
   // goes away, this function can be removed.
@@ -187,6 +196,11 @@ class ContentSettingsHandler : public OptionsPageUIHandler,
   // RemoveException().
   void RemoveZoomLevelException(const base::ListValue* args);
 
+  // Removes one exception for a chooser-based permission. |args| contains the
+  // parameters passed to RemoveException().
+  void RemoveChooserException(const ChooserTypeNameEntry* chooser_type,
+                              const base::ListValue* args);
+
   // Callbacks used by the page ------------------------------------------------
 
   // Sets the default value for a specific content type. |args| includes the
@@ -227,7 +241,9 @@ class ContentSettingsHandler : public OptionsPageUIHandler,
 
   // Returns exceptions constructed from the policy-set allowed URLs
   // for the content settings |type| mic or camera.
-  scoped_ptr<base::ListValue> GetPolicyAllowedUrls(ContentSettingsType type);
+  void GetPolicyAllowedUrls(
+      ContentSettingsType type,
+      std::vector<scoped_ptr<base::DictionaryValue>>* exceptions);
 
   // Fills in |exceptions| with Values for the given |type| from |map|.
   void GetExceptionsFromHostContentSettingsMap(