Enable right click user switching by default.

This is the first step in removing the flag entirely.

BUG=457462

Review URL: https://codereview.chromium.org/931233004

Cr-Commit-Position: refs/heads/master@{#316959}

chrome/browser/profiles/profile_window.cc

@@ -509,10 +509,7 @@ void BubbleViewModeFromAvatarBubbleMode(
       *tutorial_mode = TUTORIAL_MODE_SHOW_ERROR;
       return;
     case BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH:
-      if (switches::IsFastUserSwitching())
-        *bubble_view_mode = profiles::BUBBLE_VIEW_MODE_FAST_PROFILE_CHOOSER;
-      else
-        *bubble_view_mode = profiles::BUBBLE_VIEW_MODE_PROFILE_CHOOSER;
+      *bubble_view_mode = profiles::BUBBLE_VIEW_MODE_FAST_PROFILE_CHOOSER;
       return;
     default:
       *bubble_view_mode = profiles::BUBBLE_VIEW_MODE_PROFILE_CHOOSER;

chrome/browser/ui/views/frame/opaque_browser_frame_view.cc

@@ -335,11 +335,9 @@ void OpaqueBrowserFrameView::ButtonPressed(views::Button* sender,
         BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH :
         BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT;
 
-    if (switches::IsFastUserSwitching() || !isRightClick) {
-      browser_view()->ShowAvatarBubbleFromAvatarButton(
-          mode,
-          signin::ManageAccountsParams());
-    }
+    browser_view()->ShowAvatarBubbleFromAvatarButton(
+        mode,
+        signin::ManageAccountsParams());
   }
 }