Newly created profiles should have the grey silhouette as avatar.

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

 // Copyright 2012 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.
 
 #include "chrome/browser/ui/views/frame/browser_view.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 564 matching lines @@
       otr_resource_id = IDR_OTR_ICON_FULLSCREEN;
 #if defined(OS_WIN)
     if (win8::IsSingleWindowMetroMode())
       otr_resource_id = IDR_OTR_ICON_FULLSCREEN;
 #endif
   }
 
   return otr_resource_id;
 }
 
 int BrowserView::GetGuestIconResourceID() const {

[msw, 2014/04/04 20:52:49]

nit: remove this function, inline the contents at its one call site.

[Mike Lerman, 2014/04/04 21:09:07]

Done.

-  return IDR_LOGIN_GUEST;
+  return ProfileInfoCache::GetPlaceholderAvatarIconResourceID();
 }
 
 bool BrowserView::ShouldShowAvatar() const {
 #if defined(OS_CHROMEOS)
   if (!browser_->is_type_tabbed() && !browser_->is_app())
     return false;
   // Don't show incognito avatar in the guest session.
   if (IsOffTheRecord() && !IsGuestSession())
     return true;
   // This function is called via BrowserNonClientFrameView::UpdateAvatarInfo
@@ skipping 1988 matching lines @@
       !GetLocationBar()->GetOmniboxView()->model()->popup_model()->IsOpen()) {
     gfx::Point icon_bottom(
         toolbar_->location_bar()->GetLocationBarAnchorPoint());
     ConvertPointToTarget(toolbar_->location_bar(), this, &icon_bottom);
     gfx::Point infobar_top(0, infobar_container_->GetVerticalOverlap(NULL));
     ConvertPointToTarget(infobar_container_, this, &infobar_top);
     top_arrow_height = infobar_top.y() - icon_bottom.y();
   }
   return top_arrow_height;
 }