Remove unused V8 integration code in Sky

sky/engine/v8_inspector/read_from_source_tree.cc

-// Copyright 2014 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.
-
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
-#include "base/path_service.h"
-#include "sky/engine/config.h"
-#include "sky/engine/v8_inspector/read_from_source_tree.h"
-
-namespace inspector {
-
-// TODO(eseidel): This is a horrible hack and only works when run
-// inside its source tree!  crbug.com/434513
-void ReadFileFromSourceTree(const char* name, std::string* buffer) {
-  CHECK(buffer);
-  base::FilePath root_dir;
-  PathService::Get(base::DIR_SOURCE_ROOT, &root_dir);
-  base::FilePath path = root_dir.AppendASCII("sky");
-  path = path.AppendASCII("engine").AppendASCII("v8_inspector");
-
-  if (std::string("InjectedScriptSource.js") == name)
-    path = path.AppendASCII(name);
-  else if (std::string("DebuggerScript.js") == name)
-    path = path.AppendASCII(name);
-  else
-    CHECK(false);
-
-  base::ReadFileToString(path, buffer);
-  CHECK(!buffer->empty());
-}
-
-}  // namespace inspector