DevTools: Added package.json, LICENSE, and .npmignore

These files are from: https://github.com/paulirish/npm-publish-devtools-frontend

- Will add npm scripts for hosted mode workflow

BUG=629914

Review-Url: https://codereview.chromium.org/2171503002
Cr-Commit-Position: refs/heads/master@{#406729}

.npmignore

@@ -0,0 +1,5 @@
+devtools.gyp
+devtools.gypi
+BUILD.gn
+PRESUBMIT.py
+OWNERS

LICENSE

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+// Copyright 2014 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package.json

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+{
+  "name": "chrome-devtools-frontend",
+  "version": "1.0.XXXXXX",
+  "description": "Chrome DevTools UI",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/ChromeDevTools/devtools-frontend.git"
+  },
+  "keywords": [
+    "devtools",
+    "chrome",
+    "chromium",
+    "blink",
+    "debugger"
+  ],
+  "author": "The Chromium Authors",
+  "license": "SEE LICENSE IN https://chromium.googlesource.com/chromium/src/+/master/LICENSE",
+  "bugs": {
+    "url": "https://bugs.chromium.org/p/chromium/issues/list?can=2&q=component:Platform%3EDevTools%20&sort=-opened&colspec=ID%20Stars%20Owner%20Summary%20Modified%20Opened"
+  },
+  "homepage": "https://devtools.chrome.com"
+}