Add host-side rate-limiting to desktop resize events.

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 1f2bbc5d1720e2728ffa34e3d5103a437da1b19b..730dca7b4c16a28ca855d9819d7bf041d700d1e2 100644
--- a/remoting/host/desktop_session_proxy.cc
+++ b/remoting/host/desktop_session_proxy.cc
@@ -34,6 +34,7 @@
 
 const bool kReadOnly = true;
 const char kSendInitialResolution[] = "sendInitialResolution";
+const char kRateLimitResizeRequests[] = "rateLimitResizeRequests";
 
 namespace remoting {
 
@@ -144,8 +145,11 @@ scoped_ptr<media::ScreenCapturer> DesktopSessionProxy::CreateVideoCapturer() {
 }
 
 std::string DesktopSessionProxy::GetCapabilities() const {
-  // Ask the client to send it's resolution unconditionally.
-  return virtual_terminal_ ? kSendInitialResolution : std::string();
+  std::string result = kRateLimitResizeRequests;
+  // Ask the client to send its resolution unconditionally.
+  if (virtual_terminal_)
+    result = result + " " + kSendInitialResolution;
+  return result;
 }
 
 void DesktopSessionProxy::SetCapabilities(const std::string& capabilities) {