refactor to Introduce AUDIO_CAPTURE and VIDEO_CAPTURE permissions.

chrome/browser/permissions/permission_context_base.h

Index: chrome/browser/permissions/permission_context_base.h
diff --git a/chrome/browser/permissions/permission_context_base.h b/chrome/browser/permissions/permission_context_base.h
index 440880b957d9a3d30d8f65c321d79fbea0e53921..5c8406fb55f65b249468588c3ebe9ec5d3cae8a2 100644
--- a/chrome/browser/permissions/permission_context_base.h
+++ b/chrome/browser/permissions/permission_context_base.h
@@ -117,6 +117,9 @@ class PermissionContextBase : public KeyedService {
   // Returns the profile associated with this permission context.
   Profile* profile() const;
 
+  // Returns the ContentSettingsType associated with this permission context.
+  ContentSettingsType content_settings_type() const;

[mlamouri (slow - plz ping), 2015/08/26 13:49:34]

ContentSettingsType is an implementation details of chrome/browser/permissions/.
There is an ongoing task which is about removing all association between
PermissionType and ContentSetting outside of the internal c/b/permissions code.

[guoweis_left_chromium, 2015/08/26 22:29:57]

Done.

+
   // Store the decided permission as a content setting.
   // virtual since the permission might be stored with different restrictions
   // (for example for desktop notifications).