DevTools: DevTools opened for an old version of chrome or webview can't record cpu/heap profile.

The reason of that is a difference in URL for TempStorageSharedWorker between the host and the device front-ends
If DevTools window for a host page was opened before DevTools window for a device then the second DevTools
window will fail to run the shared worker and vice versa.

BUG=430794

Review URL: https://codereview.chromium.org/712593002

git-svn-id: svn://svn.chromium.org/blink/trunk@185012 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/bindings/TempFile.js

@@ -363,11 +363,18 @@ WebInspector.DeferredTempFile.prototype = {
  */
 WebInspector.TempStorageCleaner = function()
 {
-    this._worker = Runtime.startSharedWorker("temp_storage_shared_worker", "TempStorage");
-    this._worker.onerror = this._handleError.bind(this);
-    this._callbacks = [];
-    this._worker.port.onmessage = this._handleMessage.bind(this);
-    this._worker.port.onerror = this._handleError.bind(this);
+    try {
+        this._worker = Runtime.startSharedWorker("temp_storage_shared_worker", "TempStorageCleaner");
+        this._worker.onerror = this._handleError.bind(this);
+        this._callbacks = [];
+        this._worker.port.onmessage = this._handleMessage.bind(this);
+        this._worker.port.onerror = this._handleError.bind(this);
+    } catch (e) {
+        if (e.name === "URLMismatchError")
+            console.log("Shared worker wasn't started due to url difference. " + e);
+        else
+            throw e;
+    }
 }
 
 WebInspector.TempStorageCleaner.prototype = {