[inspector] Create InjectedScript per session in each context

test/inspector/sessions/runtime-remote-object.js

Index: test/inspector/sessions/runtime-remote-object.js
diff --git a/test/inspector/sessions/runtime-remote-object.js b/test/inspector/sessions/runtime-remote-object.js
new file mode 100644
index 0000000000000000000000000000000000000000..aaaccb41ba004b06460a8cfd62cf8c4c1d7874b1
--- /dev/null
+++ b/test/inspector/sessions/runtime-remote-object.js
@@ -0,0 +1,30 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+InspectorTest.log('Tests that multiple sessions do not interfere with each other\'s remote objects.');
+
+(async function test() {
+  var contextGroup = new InspectorTest.ContextGroup();
+  var session1 = contextGroup.connect();
+  var session2 = contextGroup.connect();
+
+  InspectorTest.log('Evaluating in 1');
+  var result1 = await session1.Protocol.Runtime.evaluate({expression: '({a: 42})'});
+  InspectorTest.log('Evaluating in 2');
+  var result2 = await session2.Protocol.Runtime.evaluate({expression: '({a: 17})'});
+
+  await print(2, session2, result2);
+  await print(1, session1, result1);
+  InspectorTest.log('Disconnecting 2');
+  session2.disconnect();
+  await print(1, session1, result1);
+
+  InspectorTest.completeTest();
+})();
+
+async function print(num, session, message) {
+  InspectorTest.log('Retrieving properties in ' + num);
+  var objectId = message.result.result.objectId;
+  InspectorTest.logMessage(await session.Protocol.Runtime.getProperties({objectId, ownProperties: true}));
+}