Remove supports_touch_events flag from BasicDesktopEnvironment

remoting/host/desktop_session_proxy.cc

Index: remoting/host/desktop_session_proxy.cc
diff --git a/remoting/host/desktop_session_proxy.cc b/remoting/host/desktop_session_proxy.cc
index b09f2829e637a985707f3f44b8f2552b8709e04a..6f228f83853cab0351db8f0d253a98a9a0d3ed8e 100644
--- a/remoting/host/desktop_session_proxy.cc
+++ b/remoting/host/desktop_session_proxy.cc
@@ -93,8 +93,7 @@ DesktopSessionProxy::DesktopSessionProxy(
     scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
     base::WeakPtr<ClientSessionControl> client_session_control,
     base::WeakPtr<DesktopSessionConnector> desktop_session_connector,
-    bool virtual_terminal,
-    bool supports_touch_events)
+    bool virtual_terminal)
     : audio_capture_task_runner_(audio_capture_task_runner),
       caller_task_runner_(caller_task_runner),
       io_task_runner_(io_task_runner),
@@ -102,8 +101,7 @@ DesktopSessionProxy::DesktopSessionProxy(
       desktop_session_connector_(desktop_session_connector),
       pending_capture_frame_requests_(0),
       is_desktop_session_connected_(false),
-      virtual_terminal_(virtual_terminal),
-      supports_touch_events_(supports_touch_events) {
+      virtual_terminal_(virtual_terminal) {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());
 }
 
@@ -140,11 +138,15 @@ DesktopSessionProxy::CreateMouseCursorMonitor() {
 std::string DesktopSessionProxy::GetCapabilities() const {
   std::string result = protocol::kRateLimitResizeRequests;
   // Ask the client to send its resolution unconditionally.
-  if (virtual_terminal_)
-    result = result + " " + protocol::kSendInitialResolution;
+  if (virtual_terminal_) {
+    result += " ";
+    result += protocol::kSendInitialResolution;

[Hzj_jie, 2016/10/26 18:56:32]

string::append?

[Sergey Ulanov, 2016/10/26 19:32:56]

+= is more readable and does the same thing

[Hzj_jie, 2016/10/26 22:38:39]

No matter, it's more like a personal preference as
result.append("a").append("b"), instead of (result += "a") += "b".

+  }
 
-  if (supports_touch_events_)
-    result = result + " "  + protocol::kTouchEventsCapability;
+  if (InputInjector::SupportsTouchEvents()) {
+    result += " ";
+    result += protocol::kTouchEventsCapability;
+  }
 
   return result;
 }