Touch Events capability negotiation

remoting/webapp/crd/js/client_session.js

Index: remoting/webapp/crd/js/client_session.js
diff --git a/remoting/webapp/crd/js/client_session.js b/remoting/webapp/crd/js/client_session.js
index 0bb20cb674c12accc9598674044652370a83e10d..68b9b1841552e2573369bd46d8e7674fc7e2c45c 100644
--- a/remoting/webapp/crd/js/client_session.js
+++ b/remoting/webapp/crd/js/client_session.js
@@ -207,6 +207,13 @@ remoting.ClientSession.Capability = {
   // <1000 users on M-29 or below. Remove this and the capability on the host.
   RATE_LIMIT_RESIZE_REQUESTS: 'rateLimitResizeRequests',
 
+  // Host & client support touch. Client can always support multi touch
+  // because if the client is not a touch device, it cannot send touch events to
+  // the host. What really matters is whether the host supports this.
+  // If not the plugin should not handle touch events and get synthesized
+  // mouse events from PPAPI.

[Wez, 2015/03/30 17:10:07]

Suggest rewording:

"Host & client support touch. If the host does not support touch then the client
will let PPAPI translate touch input into mouse events, for compatibility with
non-touch-aware UI."

[Rintaro Kuroiwa, 2015/04/08 03:27:43]

Done.

+  MULTI_TOUCH: 'multiTouch',
+
   // Indicates that host/client supports Google Drive integration, and that the
   // client should send to the host the OAuth tokens to be used by Google Drive
   // on the host.
@@ -465,6 +472,10 @@ remoting.ClientSession.prototype.onSetCapabilities = function(capabilities) {
   if (this.hasCapability(remoting.ClientSession.Capability.GOOGLE_DRIVE)) {
     this.sendGoogleDriveAccessToken_();
   }
+

[Wez, 2015/03/30 17:10:07]

nit: No need for blank line.

[Rintaro Kuroiwa, 2015/04/08 03:27:43]

Done.

+  if (this.hasCapability(remoting.ClientSession.Capability.MULTI_TOUCH)) {
+    this.plugin_.enableTouchEvents();
+  }
 };
 
 /**
@@ -602,4 +613,3 @@ remoting.ClientSession.prototype.sendGoogleDriveAccessToken_ = function() {
   window.setTimeout(this.sendGoogleDriveAccessToken_.bind(this),
                     remoting.ACCESS_TOKEN_RESEND_INTERVAL_MS);
 };
-