Change histogram.h includes to histogram_macros.h in net/
Also removes a number of histogram.h includes that are apparently
unused.
BUG=416479
Review URL: https://codereview.chromium.org/1187813006
Cr-Commit-Position: refs/heads/master@{#334825}
diff --git a/net/websockets/websocket_channel.cc b/net/websockets/websocket_channel.cc
index 254c6a41..0237ca10 100644
--- a/net/websockets/websocket_channel.cc
+++ b/net/websockets/websocket_channel.cc
@@ -16,7 +16,7 @@
#include "base/location.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_conversions.h"
#include "base/single_thread_task_runner.h"
#include "base/stl_util.h"
