[inspector] add presubmit.py to compile inspector-related scripts

src/inspector/PRESUBMIT.py

Index: src/inspector/PRESUBMIT.py
diff --git a/src/inspector/PRESUBMIT.py b/src/inspector/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..904cd796203484a69b23be4ea00ad2e70f8ff6a5
--- /dev/null
+++ b/src/inspector/PRESUBMIT.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""v8_inspect presubmit script
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into gcl.
+"""
+
+compile_note = "Be sure to run your patch by the compile-scripts.py script prior to committing!"
+
+
+def _CompileScripts(input_api, output_api):
+    local_paths = [f.LocalPath() for f in input_api.AffectedFiles()]
+    if (any("js_protocol.json" in path for path in local_paths) or
+            any("compile-scripts.py" in path for path in local_paths) or
+            any("injected-script-source.js" in path for path in local_paths) or
+            any("debugger_script_externs.js" in path for path in local_paths) or
+            any("injected_script_externs.js" in path for path in local_paths) or
+            any("check_injected_script_source.js" in path for path in local_paths) or
+            any("debugger-script.js" in path for path in local_paths)):
+        lint_path = input_api.os_path.join(input_api.PresubmitLocalPath(),
+            "build", "compile-scripts.py")
+        out, _ = input_api.subprocess.Popen(
+            [input_api.python_executable, lint_path],
+            stdout=input_api.subprocess.PIPE,
+            stderr=input_api.subprocess.STDOUT).communicate()
+        if "ERROR" in out or "WARNING" in out:
+            return [output_api.PresubmitError(out)]
+        if "NOTE" in out:
+            return [output_api.PresubmitPromptWarning(out + compile_note)]
+    return []
+
+
+def CheckChangeOnUpload(input_api, output_api):
+    results = []
+    results.extend(_CompileScripts(input_api, output_api))
+    return results
+
+
+def CheckChangeOnCommit(input_api, output_api):
+    results = []
+    return results