Change Rietveld.latest_try_jobs to return try job result details.

third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py b/third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py
index dd0dd98c650e2c8367343286bb1436c931dea1c8..1d01b2a07f7f99276b4d4085a1203e9ef80705a2 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/common/net/rietveld.py
@@ -20,17 +20,18 @@ class Rietveld(object):
     def __init__(self, web):
         self.web = web
 
-    def latest_try_jobs(self, issue_number, builder_names, patchset_number=None):
-        """Returns a list of Build objects for jobs on the latest patchset.
+    def latest_try_job_results(self, issue_number, builder_names=None, patchset_number=None):
+        """Returns a list of Build objects for builds on the latest patchset.
 
         Args:
             issue_number: A Rietveld issue number.
-            builder_names: A collection of builder names to list jobs for.
-            patchset_number: Use a specific patchset instead of the latest one.
+            builder_names: A collection of builder names. If specified, only results
+                from the given list of builders will be kept.
+            patchset_number: If given, a specific patchset will be used instead of the latest one.
 
         Returns:
-            A list of Build objects for the latest job for each builder, on the
-            latest patchset. If none were found, an empty list is returned.
+            A dict mapping Build objects to result dicts for the latest build
+            for each builder on the latest patchset.
         """
         try:
             if patchset_number:
@@ -39,15 +40,39 @@ class Rietveld(object):
                 url = self._latest_patchset_url(issue_number)
             patchset_data = self._get_json(url)
         except (urllib2.URLError, ValueError):
-            return []
-        jobs = []
-        for job in patchset_data['try_job_results']:
-            if job['builder'] not in builder_names:
-                continue
-            jobs.append(Build(
-                builder_name=job['builder'],
-                build_number=job['buildnumber']))
-        return self.filter_latest_jobs(jobs)
+            return {}
+
+        def build(job):
+            return Build(builder_name=job['builder'], build_number=job['buildnumber'])
+
+        results = {build(job): job for job in patchset_data['try_job_results']}
+
+        if builder_names is not None:
+            results = {b: result for b, result in results.iteritems() if b.builder_name in builder_names}
+
+        latest_builds = self._filter_latest_builds(list(results))
+        return {b: result for b, result in results.iteritems() if b in latest_builds}
+
+    def _filter_latest_builds(self, builds):
+        """Filters out a collection of Build objects to include only the latest for each builder.
+
+        Args:
+            jobs: A list of Build objects.
+
+        Returns:
+            A list of Build objects that contains only the latest build for each builder.
+        """
+        builder_to_highest_number = {}
+        for build in builds:
+            if build.build_number > builder_to_highest_number.get(build.builder_name, 0):
+                builder_to_highest_number[build.builder_name] = build.build_number
+
+        def is_latest_build(build):
+            if build.builder_name not in builder_to_highest_number:
+                return False
+            return builder_to_highest_number[build.builder_name] == build.build_number
+
+        return [b for b in builds if is_latest_build(b)]
 
     def changed_files(self, issue_number):
         """Lists the files included in a CL, or None if this can't be determined.
@@ -90,31 +115,3 @@ class Rietveld(object):
 
     def _patchset_url(self, issue_number, patchset_number):
         return '%s/%s' % (self._issue_url(issue_number), patchset_number)
-
-    def filter_latest_jobs(self, jobs):
-        """Filters out the list of jobs to include only the latest for each builder.
-
-        Args:
-            jobs: A list of Build objects.
-
-        Returns:
-            A list of Build objects such that only the latest job for each builder
-            is kept.
-        """
-        builder_to_highest_number = {}
-        for j in jobs:
-            if j.build_number > builder_to_highest_number.get(j.builder_name, 0):
-                builder_to_highest_number[j.builder_name] = j.build_number
-        return [j for j in jobs if (
-            j.builder_name in builder_to_highest_number and
-            builder_to_highest_number[j.builder_name] == j.build_number
-        )]
-
-    def get_latest_try_job_results(self, issue_number):
-        """Returns a dict mapping builders to try job results."""
-        url = self._latest_patchset_url(issue_number)
-        patchset_data = self._get_json(url)
-        results = {}
-        for job in patchset_data['try_job_results']:
-            results[job['builder']] = job['result']
-        return results