[DevTools] Force context creation when runtime is enabled.

content/browser/devtools/protocol/devtools_protocol_browsertest.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 <stddef.h>
 #include <utility>
 
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
@@ skipping 470 matching lines @@
       shell()->web_contents()->GetBrowserContext(),
       GURL("javascript:x=1"),
       nullptr,
       gfx::Size());
   WaitForLoadStop(window->web_contents());
   Attach();
   SendCommand("Page.reload", nullptr, false);
   // Should not crash at this point.
 }
 
+IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest, EvaluateInBlankPage) {
+  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
+  Attach();
+  scoped_ptr<base::DictionaryValue> params(new base::DictionaryValue());
+  params->SetString("expression", "window");
+  SendCommand("Runtime.evaluate", std::move(params), true);
+  bool wasThrown = true;
+  EXPECT_TRUE(result_->GetBoolean("wasThrown", &wasThrown));
+  EXPECT_FALSE(wasThrown);
+}
+
+IN_PROC_BROWSER_TEST_F(DevToolsProtocolTest,
+    EvaluateInBlankPageAfterNavigation) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+  GURL test_url = embedded_test_server()->GetURL("/devtools/navigation.html");
+  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 1);
+  Attach();
+  NavigateToURLBlockUntilNavigationsComplete(shell(), GURL("about:blank"), 1);
+  scoped_ptr<base::DictionaryValue> params(new base::DictionaryValue());
+  params->SetString("expression", "window");
+  SendCommand("Runtime.evaluate", std::move(params), true);
+  bool wasThrown = true;
+  EXPECT_TRUE(result_->GetBoolean("wasThrown", &wasThrown));
+  EXPECT_FALSE(wasThrown);
+}
+
 }  // namespace content