Add profile selector menu to app list.

ui/app_list/signin_delegate.h

Index: ui/app_list/signin_delegate.h
diff --git a/ui/app_list/signin_delegate.h b/ui/app_list/signin_delegate.h
index eda67f410e8dea7a182890c8b000356f4c7d36ca..a6754c141867f05d8b3fa7e2f5a70a0d9723df41 100644
--- a/ui/app_list/signin_delegate.h
+++ b/ui/app_list/signin_delegate.h
@@ -10,6 +10,10 @@
 #include "base/strings/string16.h"
 #include "ui/app_list/app_list_export.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace app_list {
 
 class SigninDelegateObserver;
@@ -30,6 +34,8 @@ class APP_LIST_EXPORT SigninDelegate {
   virtual base::string16 GetLearnMoreLinkText() = 0;
   virtual base::string16 GetSettingsLinkText() = 0;
 
+  virtual void SetProfileByPath(const base::FilePath& profile_path) = 0;

[koz (OOO until 15th September), 2013/08/05 01:09:11]

This should take a Profile*, seeing as implementors simply look up a Profile*
from profile_path anyway.

[benwells, 2013/08/06 01:37:29]

I don't think ui/app_list shouldn't depend on Profile.

[koz (OOO until 15th September), 2013/08/06 04:51:33]

Good point. This method should probably not be in this interface at all. It
would go better in the implementation (ie: ChromeSigninDelegate) which deals
with Profile*s.

[calamity, 2013/08/08 04:52:12]

Done.

+
   void AddObserver(SigninDelegateObserver* observer);
   void RemoveObserver(SigninDelegateObserver* observer);