mac: Don't transfer background color to new tabs

chrome/browser/ui/browser_unittest.cc

 // Copyright 2013 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/browser.h"
 
 #include "base/macros.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/ui/browser_command_controller.h"
 #include "chrome/browser/ui/browser_commands.h"
@@ skipping 50 matching lines @@
   contents2->SetIsCrashed(base::TERMINATION_STATUS_PROCESS_CRASHED, -1);
   EXPECT_TRUE(contents2->IsCrashed());
 
   // Selecting the second tab does not cause a load or clear the crash.
   tab_strip_model->ActivateTabAt(1, true);
   EXPECT_TRUE(tab_strip_model->IsTabSelected(1));
   EXPECT_FALSE(contents2->IsLoading());
   EXPECT_TRUE(contents2->IsCrashed());
 }
 
-TEST_F(BrowserUnitTest, SetBackgroundColorForNewTab) {
+// This tests a workaround which is not necessary on Mac.
+// https://crbug.com/719230
+#if defined(OS_MACOSX)
+#define MAYBE_SetBackgroundColorForNewTab DISABLED_SetBackgroundColorForNewTab
+#else
+#define MAYBE_SetBackgroundColorForNewTab SetBackgroundColorForNewTab
+#endif
+TEST_F(BrowserUnitTest, MAYBE_SetBackgroundColorForNewTab) {
   TabStripModel* tab_strip_model = browser()->tab_strip_model();
 
   WebContents* contents1 = CreateTestWebContents();
   tab_strip_model->AppendWebContents(contents1, true);
   WebContentsTester::For(contents1)->NavigateAndCommit(GURL("about:blank"));
   WebContentsTester::For(contents1)->TestSetIsLoading(false);
 
   contents1->GetMainFrame()->GetView()->SetBackgroundColor(SK_ColorRED);
 
   // Add a second tab in the background.
@@ skipping 159 matching lines @@
   // Activate the 1st tab which is NTP.
   browser()->tab_strip_model()->ActivateTabAt(0, true);
   EXPECT_EQ(BookmarkBar::SHOW, browser()->bookmark_bar_state());
   EXPECT_EQ(BookmarkBar::SHOW, window_bookmark_bar_state());
 
   // Activate the 2nd tab which is non-NTP.
   browser()->tab_strip_model()->ActivateTabAt(1, true);
   EXPECT_EQ(BookmarkBar::SHOW, browser()->bookmark_bar_state());
   EXPECT_EQ(BookmarkBar::SHOW, window_bookmark_bar_state());
 }