Revert of Makes MaterialDesignController initialization explicit

content/public/test/browser_test_base.cc

Index: content/public/test/browser_test_base.cc
diff --git a/content/public/test/browser_test_base.cc b/content/public/test/browser_test_base.cc
index d6bb6671bac970b37fcdf5b2bd5982d28e4f0fc7..7b7513aabb472ba4d9075127381132ea4323aed3 100644
--- a/content/public/test/browser_test_base.cc
+++ b/content/public/test/browser_test_base.cc
@@ -30,7 +30,6 @@
 #include "net/base/network_interfaces.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
-#include "ui/base/test/material_design_controller_test_api.h"
 #include "ui/compositor/compositor_switches.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_switches.h"
@@ -180,10 +179,6 @@
 
 void BrowserTestBase::SetUp() {
   set_up_called_ = true;
-  // ContentTestSuiteBase might have already initialized
-  // MaterialDesignController in browser_tests suite.
-  // Uninitialize here to let the browser process do it.
-  ui::test::MaterialDesignControllerTestAPI::UninitializeMode();
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();