[Chromoting] Separate the click event handlers from the other event h…

…andlers.

This breaks the webapp's initEventHandlers into two functions:
  initClickEventHandlers - for handling UI button clicks
  initEventHandlers - for other events (resize, load/unload)

NOTRY=True
BUG=

Review URL: https://codereview.chromium.org/766703005

Cr-Commit-Position: refs/heads/master@{#306912}

remoting/webapp/crd/js/crd_main.js

@@ -15,7 +15,8 @@ remoting.initChromoting = function() {
   remoting.initIdentity();
   remoting.initIdentityEmail(remoting.onEmailAvailable);
 
-  remoting.initEventHandlers();
+  remoting.initElementEventHandlers();
+  remoting.initGlobalEventHandlers();
 
   if (base.isAppsV2()) {
     remoting.fullscreen = new remoting.FullscreenAppsV2();

remoting/webapp/crd/js/event_handlers.js

@@ -7,7 +7,7 @@
 /** @suppress {duplicate} */
 var remoting = remoting || {};
 
-remoting.initEventHandlers = function() {
+remoting.initElementEventHandlers = function() {
   var goHome = function() {
     remoting.setMode(remoting.AppMode.HOME);
   };
@@ -115,7 +115,9 @@ remoting.initEventHandlers = function() {
   registerEventListeners(me2me_actions);
   registerEventListeners(host_actions);
   registerEventListeners(auth_actions);
+}
 
+remoting.initGlobalEventHandlers = function() {
   window.addEventListener('resize', remoting.onResize, false);
   // When a window goes full-screen, a resize event is triggered, but the
   // Fullscreen.isActive call is not guaranteed to return true until the