GetProfileByUser deprecated and renamed to GetProfileByUserUnsafe.

Created safe alternative which is called GetProfileByUser.
The plan is to investigate all usages of GetProfileByUserUnsafe one by one and
replace them with a safe version, if possible.
Also warning message added for cases when GetProfileByUserUnsafe returns profile
of a wrong user or signin profile. That will help us to detect suspicious calls
to GetProfileByUserUnsafe while work in progress.

BUG=361528
TBR=yoz,dcheng,agl,dewittj,skuhne,derat

Review URL: https://codereview.chromium.org/445353004

Cr-Commit-Position: refs/heads/master@{#289011}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289011 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/chromeos/profiles/profile_helper.cc b/chrome/browser/chromeos/profiles/profile_helper.cc
index 155084e..f960630 100644
--- a/chrome/browser/chromeos/profiles/profile_helper.cc
+++ b/chrome/browser/chromeos/profiles/profile_helper.cc
@@ -177,7 +177,7 @@
   return user->email() == chromeos::UserManager::Get()->GetOwnerEmail();
 }
 
-//static
+// static
 bool ProfileHelper::IsPrimaryProfile(Profile* profile) {
   if (!profile)
     return false;
@@ -242,11 +242,37 @@
     return it == user_to_profile_for_testing_.end() ? NULL : it->second;
   }
 
+  if (!user->is_profile_created())
+    return NULL;
+  Profile* profile =
+      ProfileHelper::GetProfileByUserIdHash(user->username_hash());
+
+  // GetActiveUserProfile() or GetProfileByUserIdHash() returns a new instance
+  // of ProfileImpl(), but actually its OffTheRecordProfile() should be used.
+  if (UserManager::Get()->IsLoggedInAsGuest())
+    profile = profile->GetOffTheRecordProfile();
+
+  return profile;
+}
+
+Profile* ProfileHelper::GetProfileByUserUnsafe(const user_manager::User* user) {
+  // This map is non-empty only in tests.
+  if (!user_to_profile_for_testing_.empty()) {
+    std::map<const user_manager::User*, Profile*>::const_iterator it =
+        user_to_profile_for_testing_.find(user);
+    return it == user_to_profile_for_testing_.end() ? NULL : it->second;
+  }
+
   Profile* profile = NULL;
-  if (user->is_profile_created())
+  if (user->is_profile_created()) {
     profile = ProfileHelper::GetProfileByUserIdHash(user->username_hash());
-  else
+  } else {
+    LOG(WARNING) << "ProfileHelper::GetProfileByUserUnsafe is called when "
+                    "|user|'s profile is not created. It probably means that "
+                    "something is wrong with a calling code. Please report in "
+                    "http://crbug.com/361528 if you see this message.";
     profile = ProfileManager::GetActiveUserProfile();
+  }
 
   // GetActiveUserProfile() or GetProfileByUserIdHash() returns a new instance
   // of ProfileImpl(), but actually its OffTheRecordProfile() should be used.