Files.app: Add analytics code to instrument cloud import flows.

ui/file_manager/file_manager/common/js/test_tracker.js

Index: ui/file_manager/file_manager/common/js/test_tracker.js
diff --git a/ui/file_manager/file_manager/common/js/test_tracker.js b/ui/file_manager/file_manager/common/js/test_tracker.js
new file mode 100644
index 0000000000000000000000000000000000000000..a33afd784cba8cc2090eb1eb302e77250f609e41
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+++ b/ui/file_manager/file_manager/common/js/test_tracker.js
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+// Copyright 2015 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.
+
+/**
+ * A tracker to substitute for analytics.Tracker in tests.
+ * @construtor
+ * @implements {analytics.Tracker}
+ */
+TestTracker = function() {};
+
+/**
+ * @param {!analytics.HitType|!analytics.EventBuilder} hitType
+ * @param {(!analytics.ParameterMap|
+ *     !Object.<string, !analytics.Value>)=} opt_extraParams
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.send = function(hitType, opt_extraParams) {
+};
+
+/**
+ * @param {string} description
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.sendAppView = function() {};
+
+/**
+ * @param {string} category
+ * @param {string} action
+ * @param {string=} opt_label
+ * @param {number=} opt_value
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.sendEvent = function() {};
+
+/**
+ * @param {string} network Specifies the social network, for example Facebook
+ *     or Google Plus.
+ * @param {string} action Specifies the social interaction action.
+ *     For example on Google Plus when a user clicks the +1 button,
+ *     the social action is 'plus'.
+ * @param {string} target Specifies the target of a social interaction.
+ *     This value is typically a URL but can be any text.
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.sendSocial = function() {};
+
+/**
+ * @param {string=} opt_description Specifies the description of an exception.
+ * @param {boolean=} opt_fatal Was the exception fatal.
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.sendException = function() {};
+
+/**
+ * @param {string} category Specifies the category of the timing.
+ * @param {string} variable Specifies the variable name of the timing.
+ * @param {number} value Specifies the value of the timing.
+ * @param {string=} opt_label Specifies the optional label of the timing.
+ * @param {number=} opt_sampleRate
+ * @return {!goog.async.Deferred}
+ */
+TestTracker.prototype.sendTiming = function() {};
+
+TestTracker.prototype.forceSessionStart = function() {};
+
+/**
+ * @param {string} category
+ * @param {string} variable
+ * @param {string=} opt_label
+ * @param {number=} opt_sampleRate
+ * @return {!TestTracker.Timing}
+ */
+TestTracker.prototype.startTiming = function() {};