Convert githash to chromium revision instead of blink revision while doing a...

Convert githash to chromium revision instead of blink revision while doing a blink bisect (with -l option) in _FetchAndParse.Even though we are doing the blink bisect http://commondatastorage.googleapis.com/chromium-webkit-snapshots/index.html still stores the builds by chromium revisions.

BUG=None
NOTRY=True

Review URL: https://codereview.chromium.org/383903002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282635 0039d316-1c4b-4281-b951-d872f2087c98

tools/bisect-builds.py

@@ -199,14 +199,6 @@ class PathContext(object):
       next-marker is not None, then the listing is a partial listing and another
       fetch should be performed with next-marker being the marker= GET
       parameter."""
-      def _GetDepotName():
-        if self.base_url == CHROMIUM_BASE_URL:
-          return 'chromium'
-        elif self.base_url == WEBKIT_BASE_URL:
-          return 'blink'
-        else:
-          return 'chromium'
-
       handle = urllib.urlopen(url)
       document = ElementTree.parse(handle)
 
@@ -238,7 +230,7 @@ class PathContext(object):
         try:
           if not revnum.isdigit():
             git_hash = revnum
-            revnum = self.GetSVNRevisionFromGitHash(git_hash, _GetDepotName())
+            revnum = self.GetSVNRevisionFromGitHash(git_hash)
             githash_svn_dict[revnum] = git_hash
           if revnum is not None:
             revnum = int(revnum)