Reformat python files checked by pylint (part 1/2).

After recently changing .pylintrc (see [1]) we discovered that
the presubmit check always checks all the python files when just
one python file gets updated.

This CL moves all these files one step closer to what the linter
wants.

Autogenerated with:

# Added all the files under pylint control to ~/Desktop/to-reformat
cat ~/Desktop/to-reformat | xargs sed -i '1i\\'
git cl format --python --full

This is part 1 out of 2. The second part will fix function names and
will not be automated.

[1] - https://webrtc-review.googlesource.com/c/src/+/186664

No-Presubmit: True
Bug: webrtc:12114
Change-Id: Idfec4d759f209a2090440d0af2413a1ddc01b841
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/190980
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32530}

rtc_tools/py_event_log_analyzer/misc.py

@@ -5,7 +5,6 @@
 #  tree. An additional intellectual property rights grant can be found
 #  in the file PATENTS.  All contributing project authors may
 #  be found in the AUTHORS file in the root of the source tree.
-
 """Utility functions for calculating statistics.
 """
 
@@ -15,18 +14,17 @@ import sys
 
 
 def CountReordered(sequence_numbers):
-  """Returns number of reordered indices.
+    """Returns number of reordered indices.
 
   A reordered index is an index `i` for which sequence_numbers[i] >=
   sequence_numbers[i + 1]
   """
-  return sum(1 for (s1, s2) in zip(sequence_numbers,
-                                   sequence_numbers[1:]) if
-             s1 >= s2)
+    return sum(1 for (s1, s2) in zip(sequence_numbers, sequence_numbers[1:])
+               if s1 >= s2)
 
 
 def SsrcNormalizedSizeTable(data_points):
-  """Counts proportion of data for every SSRC.
+    """Counts proportion of data for every SSRC.
 
   Args:
      data_points: list of pb_parse.DataPoint
@@ -37,14 +35,14 @@ def SsrcNormalizedSizeTable(data_points):
      SSRC `s` to the total size of all packets.
 
   """
-  mapping = collections.defaultdict(int)
-  for point in data_points:
-    mapping[point.ssrc] += point.size
-  return NormalizeCounter(mapping)
+    mapping = collections.defaultdict(int)
+    for point in data_points:
+        mapping[point.ssrc] += point.size
+    return NormalizeCounter(mapping)
 
 
 def NormalizeCounter(counter):
-  """Returns a normalized version of the dictionary `counter`.
+    """Returns a normalized version of the dictionary `counter`.
 
   Does not modify `counter`.
 
@@ -52,12 +50,12 @@ def NormalizeCounter(counter):
     A new dictionary, in which every value in `counter`
     has been divided by the total to sum up to 1.
   """
-  total = sum(counter.values())
-  return {key: counter[key] / total for key in counter}
+    total = sum(counter.values())
+    return {key: counter[key] / total for key in counter}
 
 
 def Unwrap(data, mod):
-  """Returns `data` unwrapped modulo `mod`. Does not modify data.
+    """Returns `data` unwrapped modulo `mod`. Does not modify data.
 
   Adds integer multiples of mod to all elements of data except the
   first, such that all pairs of consecutive elements (a, b) satisfy
@@ -66,22 +64,22 @@ def Unwrap(data, mod):
   E.g. Unwrap([0, 1, 2, 0, 1, 2, 7, 8], 3) -> [0, 1, 2, 3,
   4, 5, 4, 5]
   """
-  lst = data[:]
-  for i in range(1, len(data)):
-    lst[i] = lst[i - 1] + (lst[i] - lst[i - 1] +
-                           mod // 2) % mod - (mod // 2)
-  return lst
+    lst = data[:]
+    for i in range(1, len(data)):
+        lst[i] = lst[i - 1] + (lst[i] - lst[i - 1] + mod // 2) % mod - (mod //
+                                                                        2)
+    return lst
 
 
 def SsrcDirections(data_points):
-  ssrc_is_incoming = {}
-  for point in data_points:
-    ssrc_is_incoming[point.ssrc] = point.incoming
-  return ssrc_is_incoming
+    ssrc_is_incoming = {}
+    for point in data_points:
+        ssrc_is_incoming[point.ssrc] = point.incoming
+    return ssrc_is_incoming
 
 
 # Python 2/3-compatible input function
 if sys.version_info[0] <= 2:
-  get_input = raw_input  # pylint: disable=invalid-name
+    get_input = raw_input  # pylint: disable=invalid-name
 else:
-  get_input = input  # pylint: disable=invalid-name
+    get_input = input  # pylint: disable=invalid-name