Add UMA histograms for more detailed latency tracking on the CRD host.

remoting/codec/video_encoder_verbatim.cc

Index: remoting/codec/video_encoder_verbatim.cc
diff --git a/remoting/codec/video_encoder_verbatim.cc b/remoting/codec/video_encoder_verbatim.cc
index 2948e3e27128bba6f78c31cfcd72b436a70df488..8d1befb1772c29821b940b496745e5e4934d2e63 100644
--- a/remoting/codec/video_encoder_verbatim.cc
+++ b/remoting/codec/video_encoder_verbatim.cc
@@ -6,7 +6,6 @@
 
 #include "base/logging.h"
 #include "base/stl_util.h"
-#include "base/time/time.h"
 #include "remoting/base/util.h"
 #include "remoting/proto/video.pb.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
@@ -32,8 +31,6 @@ scoped_ptr<VideoPacket> VideoEncoderVerbatim::Encode(
   if (frame.updated_region().is_empty())
     return nullptr;
 
-  base::Time encode_start_time = base::Time::Now();
-
   // Create a VideoPacket with common fields (e.g. DPI, rects, shape) set.
   scoped_ptr<VideoPacket> packet(helper_.CreateVideoPacket(frame));
   packet->mutable_format()->set_encoding(VideoPacketFormat::ENCODING_VERBATIM);
@@ -64,10 +61,6 @@ scoped_ptr<VideoPacket> VideoEncoderVerbatim::Encode(
     }
   }
 
-  // Note the time taken to encode the pixel data.
-  packet->set_encode_time_ms(
-      (base::Time::Now() - encode_start_time).InMillisecondsRoundedUp());
-
   return packet.Pass();
 }