Makes MaterialDesignController initialization explicit

content/shell/browser/shell_browser_main_parts.cc

Index: content/shell/browser/shell_browser_main_parts.cc
diff --git a/content/shell/browser/shell_browser_main_parts.cc b/content/shell/browser/shell_browser_main_parts.cc
index 1c5dcb56cf38b629311ca6c164f74ca87839f2b7..3aea816229881050145fa459498ec8da6a39a298 100644
--- a/content/shell/browser/shell_browser_main_parts.cc
+++ b/content/shell/browser/shell_browser_main_parts.cc
@@ -28,6 +28,7 @@
 #include "net/base/filename_util.h"
 #include "net/base/net_module.h"
 #include "net/grit/net_resources.h"
+#include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "url/gurl.h"
 
@@ -140,6 +141,7 @@ void ShellBrowserMainParts::InitializeBrowserContexts() {
 }
 
 void ShellBrowserMainParts::InitializeMessageLoopContext() {
+  ui::MaterialDesignController::Initialize();
   Shell::CreateNewWindow(browser_context_.get(),
                          GetStartupURL(),
                          NULL,