Move tools/autoroller to tools-webrtc/ + rename script

The script is now capable of rolling more than the chromium_revision
so the name should reflect that.

BUG=webrtc:5006
TBR=charujain@webrtc.org

Review-Url: https://codereview.webrtc.org/2581493003 .
Cr-Commit-Position: refs/heads/master@{#15624}

PRESUBMIT.py

@@ -405,7 +405,7 @@ def _RunPythonTests(input_api, output_api):
     return input_api.os_path.join(input_api.PresubmitLocalPath(), *args)
 
   test_directories = [
-    join('tools', 'autoroller', 'unittests'),
+    join('tools-webrtc', 'autoroller', 'unittests'),
     join('webrtc', 'tools', 'py_event_log_analyzer'),
   ]
 

tools-webrtc/autoroller/roll_deps.py

@@ -7,7 +7,7 @@
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
-"""Script to roll chromium_revision in the WebRTC DEPS file."""
+"""Script to automatically roll dependencies in the WebRTC DEPS file."""
 
 import argparse
 import base64

tools-webrtc/autoroller/unittests/roll_deps_test.py

@@ -18,10 +18,9 @@ import unittest
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 PARENT_DIR = os.path.join(SCRIPT_DIR, os.pardir)
 sys.path.append(PARENT_DIR)
-import roll_chromium_revision
-from roll_chromium_revision import CalculateChangedDepsProper, \
-  GetMatchingDepsEntries, ParseDepsDict, \
-  ParseLocalDepsFile, UpdateDepsFile
+import roll_deps
+from roll_deps import CalculateChangedDepsProper, GetMatchingDepsEntries, \
+  ParseDepsDict, ParseLocalDepsFile, UpdateDepsFile
 
 
 TEST_DATA_VARS = {
@@ -75,13 +74,13 @@ class TestRollChromiumRevision(unittest.TestCase):
     self._new_cr_depsfile = os.path.join(self._output_dir, 'DEPS.chromium.new')
 
     self.fake = FakeCmd()
-    self.old_RunCommand = getattr(roll_chromium_revision, '_RunCommand')
-    setattr(roll_chromium_revision, '_RunCommand', self.fake)
+    self.old_RunCommand = getattr(roll_deps, '_RunCommand')
+    setattr(roll_deps, '_RunCommand', self.fake)
 
   def tearDown(self):
     shutil.rmtree(self._output_dir, ignore_errors=True)
     self.assertEqual(self.fake.expectations, [])
-    setattr(roll_chromium_revision, '_RunCommand', self.old_RunCommand)
+    setattr(roll_deps, '_RunCommand', self.old_RunCommand)
 
   def testUpdateDepsFile(self):
     new_rev = 'aaaaabbbbbcccccdddddeeeeefffff0000011111'