[Material][Mac] Replace the default favicon with a vector

chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm

 // Copyright (c) 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.
 
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 
 #import <QuartzCore/QuartzCore.h>
 
 #include <cmath>
 #include <limits>
@@ skipping 1487 matching lines @@
   BOOL isApp = extensions_tab_helper->is_app();
   NSImage* image = nil;
   // Favicons come from the renderer, and the renderer draws everything in the
   // system color space.
   CGColorSpaceRef colorSpace = base::mac::GetSystemColorSpace();
   if (isApp) {
     SkBitmap* icon = extensions_tab_helper->GetExtensionAppIcon();
     if (icon)
       image = skia::SkBitmapToNSImageWithColorSpace(*icon, colorSpace);
   } else {
-    image = mac::FaviconForWebContents(contents);
+    TabController* tab = [tabArray_ firstObject];
+    NSColor* titleColor = [[tab tabView] titleColor];
+    NSColor* deviceColor =
+        [titleColor colorUsingColorSpace:[NSColorSpace deviceRGBColorSpace]];
+    image = mac::FaviconForWebContents(
+        contents, skia::NSDeviceColorToSkColor(deviceColor));
   }
 
   // Either we don't have a valid favicon or there was some issue converting it
   // from an SkBitmap. Either way, just show the default.
   if (!image)
     image = defaultFavicon_.get();
 
   return image;
 }
 
@@ skipping 781 matching lines @@
 
 - (TabAlertState)alertStateForContents:(content::WebContents*)contents {
   return chrome::GetTabAlertStateForContents(contents);
 }
 
 - (void)themeDidChangeNotification:(NSNotification*)notification {
   [newTabButton_ setImages];
 }
 
 @end