Import inspector_protocol via DEPS.

This is not in use yet, but will be soon.

R=jochen@chromium.org, machenbach@chromium.org
BUG=chromium:580337

Review-Url: https://codereview.chromium.org/2175653002
Cr-Commit-Position: refs/heads/master@{#37977}

.gitignore

@@ -47,6 +47,7 @@ shell_g
 /hydrogen.cfg
 /obj
 /out
+/platform/inspector_protocol
 /perf.data
 /perf.data.old
 /test/benchmarks/data

DEPS

@@ -17,6 +17,8 @@ deps = {
     Var("git_url") + "/chromium/buildtools.git" + "@" + "60f7f9a8b421ebf9a46041dfa2ff11c0fe59c582",
   "v8/base/trace_event/common":
     Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "315bf1e2d45be7d53346c31cfcc37424a32c30c8",
+  "v8/platform/inspector_protocol":
+    Var("git_url") + "/chromium/src/third_party/WebKit/Source/platform/inspector_protocol.git" + "@" + "f49542089820a34a9a6e33264e09b73779407512",
   "v8/tools/mb":
     Var('git_url') + '/chromium/src/tools/mb.git' + '@' + "c0f2da01e7e7e530fcbbf3823b7c7655632f05b1",
   "v8/tools/swarming_client":