Try to use `pipeline` where applicable

app/models/ci/build.rb

@@ -118,12 +118,12 @@ module Ci
                                    .reorder(iid: :asc)
       merge_requests.find do |merge_request|
-        merge_request.commits.any? { |ci| ci.id == commit.sha }
+        merge_request.commits.any? { |ci| ci.id == pipeline.sha }
       end
     end
     def project_id
-      commit.project.id
+      pipeline.project_id
     end
     def project_name
@@ -359,8 +359,8 @@ module Ci
     end
     def global_yaml_variables
-      if commit.config_processor
-        commit.config_processor.global_variables.map do |key, value|
+      if pipeline.config_processor
+        pipeline.config_processor.global_variables.map do |key, value|
           { key: key, value: value, public: true }
         end
       else
@@ -369,8 +369,8 @@ module Ci
     end
     def job_yaml_variables
-      if commit.config_processor
-        commit.config_processor.job_variables(name).map do |key, value|
+      if pipeline.config_processor
+        pipeline.config_processor.job_variables(name).map do |key, value|
           { key: key, value: value, public: true }
         end
       else

app/models/commit_status.rb

@@ -55,7 +55,7 @@ class CommitStatus < ActiveRecord::Base
   delegate :sha, :short_sha, to: :commit
   def before_sha
-    commit.before_sha || Gitlab::Git::BLANK_SHA
+    pipeline.before_sha || Gitlab::Git::BLANK_SHA
   end
   def self.stages

lib/gitlab/build_data_builder.rb

@@ -3,7 +3,7 @@ module Gitlab
     class << self
       def build(build)
         project = build.project
-        commit = build.commit
+        commit = build.pipeline
         user = build.user
         data = {

spec/factories/ci/builds.rb

@@ -43,7 +43,7 @@ FactoryGirl.define do
     end
     after(:build) do |build, evaluator|
-      build.project = build.commit.project
+      build.project = build.pipeline.project
     end
     factory :ci_not_started_build do

spec/factories/commit_statuses.rb

@@ -8,7 +8,7 @@ FactoryGirl.define do
     finished_at 'Tue, 26 Jan 2016 08:23:42 +0100'
     after(:build) do |build, evaluator|
-      build.project = build.commit.project
+      build.project = build.pipeline.project
     end
     factory :generic_commit_status, class: GenericCommitStatus do