Include application ID in log entries.

BUG=b/19609728

Review URL: https://codereview.chromium.org/1066003007

Cr-Commit-Position: refs/heads/master@{#327338}

remoting/webapp/crd/js/log_to_server.js

@@ -180,6 +180,7 @@ remoting.LogToServer.prototype.log_ = function(entry) {
       (new Date().getTime() - this.sessionStartTime_ -
           this.authTotalTime_) / 1000.0;
   entry.addSessionDuration(sessionDurationInSeconds);
+  entry.addApplicationId();
   // The host-version will be blank for logs before a session has been created.
   // For example, the signal-strategy log-entries won't have host version info.
   entry.addHostVersion(this.hostVersion_);

remoting/webapp/crd/js/server_log_entry.js

@@ -178,6 +178,9 @@ remoting.ServerLogEntry.VALUE_MODE_APP_REMOTING_ = 'lgapp';
 /** @private */
 remoting.ServerLogEntry.VALUE_MODE_UNKNOWN_ = 'unknown';
 
+/** @private */
+remoting.ServerLogEntry.KEY_APP_ID_ = 'application-id';
+
 /**
  * Sets one field in this log entry.
  *
@@ -496,6 +499,15 @@ remoting.ServerLogEntry.prototype.addModeField = function() {
             remoting.ServerLogEntry.getModeField_());
 };
 
+/**
+ * Adds a field specifying the application ID to this log entry.
+ * @return {void} Nothing.
+ */
+remoting.ServerLogEntry.prototype.addApplicationId = function() {
+  this.set_(remoting.ServerLogEntry.KEY_APP_ID_, chrome.runtime.id);
+};
+
+
 /**
  * Gets the value of the mode field to be put in a log entry.
  *