Session restore shouldn't care about profile home pages.

chrome/browser/extensions/extension_api_unittest.cc

 // Copyright 2014 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/extensions/extension_api_unittest.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/common/url_constants.h"
 #include "extensions/browser/extension_function.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/manifest_handlers/background_info.h"
 
 namespace utils = extension_function_test_utils;
 
 namespace extensions {
 
 ExtensionApiUnittest::ExtensionApiUnittest() : contents_(NULL) {
 }
 
 ExtensionApiUnittest::~ExtensionApiUnittest() {
 }
 
 void ExtensionApiUnittest::SetUp() {
   BrowserWithTestWindowTest::SetUp();
   extension_ = utils::CreateEmptyExtensionWithLocation(Manifest::UNPACKED);
 }
 
 void ExtensionApiUnittest::CreateBackgroundPage() {
   if (!contents_) {
-    AddTab(browser(), BackgroundInfo::GetBackgroundURL(extension()));
+    GURL url = BackgroundInfo::GetBackgroundURL(extension());
+    if (url.is_empty())
+      url = GURL(content::kAboutBlankURL);
+    AddTab(browser(), url);
     contents_ = browser()->tab_strip_model()->GetActiveWebContents();
   }
 }
 
 scoped_ptr<base::Value> ExtensionApiUnittest::RunFunctionAndReturnValue(
     UIThreadExtensionFunction* function, const std::string& args) {
   function->set_extension(extension());
   if (contents_)
     function->SetRenderViewHost(contents_->GetRenderViewHost());
   return scoped_ptr<base::Value>(
@@ skipping 36 matching lines @@
     function->SetRenderViewHost(contents_->GetRenderViewHost());
   return utils::RunFunctionAndReturnError(function, args, browser());
 }
 
 void ExtensionApiUnittest::RunFunction(
     UIThreadExtensionFunction* function, const std::string& args) {
   RunFunctionAndReturnValue(function, args);
 }
 
 }  // namespace extensions