Implement sidebar support for extension action popups

chrome/browser/browser_process.h

Index: chrome/browser/browser_process.h
diff --git a/chrome/browser/browser_process.h b/chrome/browser/browser_process.h
index 1adb831bbd597ab96ec436c8fe8d0115fcf4a64a..732d72cfe3766b164dd863a79cbbc9d02b90ca5b 100644
--- a/chrome/browser/browser_process.h
+++ b/chrome/browser/browser_process.h
@@ -36,6 +36,7 @@ class Profile;
 class ProfileManager;
 class PromoResourceService;
 class SafeBrowsingService;
+class SidebarManager;
 class StatusTray;
 class WatchDogThread;
 #if defined(ENABLE_WEBRTC)
@@ -120,6 +121,7 @@ class BrowserProcess {
   virtual rappor::RapporService* rappor_service() = 0;
   virtual ProfileManager* profile_manager() = 0;
   virtual PrefService* local_state() = 0;
+  virtual SidebarManager* sidebar_manager() = 0;

[Devlin, 2015/05/27 16:51:05]

We almost certainly don't want to have a SidebarManager as part of the browser
process (sidebars cannot, for instance, cross profiles).  This should be tied
more closely to a profile, and should probably either be a
BrowserContextKeyedService (or one of its subclasses) or live on the
ExtensionSystem.  My first inclination is probably that the latter makes more
sense.

   virtual net::URLRequestContextGetter* system_request_context() = 0;
   virtual chrome_variations::VariationsService* variations_service() = 0;
   virtual PromoResourceService* promo_resource_service() = 0;