DevTools: merge devtools_http_handler into content - it is used in all the embedders anyways.

components/devtools_http_handler/BUILD.gn

Index: components/devtools_http_handler/BUILD.gn
diff --git a/components/devtools_http_handler/BUILD.gn b/components/devtools_http_handler/BUILD.gn
deleted file mode 100644
index a7f85d7c8ed5153a1b38ec1d5e6db42ca7c4b9c9..0000000000000000000000000000000000000000
--- a/components/devtools_http_handler/BUILD.gn
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-static_library("devtools_http_handler") {
-  sources = [
-    "devtools_http_handler.cc",
-    "devtools_http_handler.h",
-    "devtools_http_handler_delegate.h",
-  ]
-
-  deps = [
-    "//base",
-    "//content/public/browser",
-    "//content/public/common",
-    "//net",
-    "//net:http_server",
-  ]
-}
-
-source_set("unit_tests") {
-  testonly = true
-  sources = [
-    "devtools_http_handler_unittest.cc",
-  ]
-
-  deps = [
-    ":devtools_http_handler",
-    "//base",
-    "//content/test:test_support",
-    "//net",
-    "//testing/gtest",
-  ]
-}