[Material][Mac] Action on Mouse Down for User Account Button

chrome/browser/ui/cocoa/profiles/avatar_button_controller.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/profiles/avatar_button_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile_attributes_entry.h"
@@ skipping 206 matching lines @@
     [avatarButton setButtonType:NSMomentaryChangeButton];
     if (switches::IsMaterialDesignUserMenu())
       [[avatarButton cell] setHighlightsBy:NSNoCellMask];
     [avatarButton setBordered:YES];
 
     [avatarButton setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
     [avatarButton setTarget:self];
     [avatarButton setAction:@selector(buttonClicked:)];
     [avatarButton setRightAction:@selector(buttonRightClicked:)];
 
+    if (ui::MaterialDesignController::IsModeMaterial())
+      [avatarButton sendActionOn:NSLeftMouseDownMask];
+
     // Check if the account already has an authentication or sync error and
     // initialize the avatar button UI.
     hasError_ = profileObserver_->HasAvatarError();
     [self updateAvatarButtonAndLayoutParent:NO];
 
     NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
     [center addObserver:self
                selector:@selector(themeDidChangeNotification:)
                    name:kBrowserThemeDidChangeNotification
                  object:nil];
@@ skipping 120 matching lines @@
         layoutSubviews];
   }
 }
 
 - (void)setErrorStatus:(BOOL)hasError {
   hasError_ = hasError;
   [self updateAvatarButtonAndLayoutParent:YES];
 }
 
 @end