Add configs for WebKit Linux Trusty ASAN/MSAN/Leak.

BUG=790286,790294,790309

Change-Id: I5314b6a2743a83ed3b864b6842b32d023caed977
Reviewed-on: https://chromium-review.googlesource.com/c/1330340Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Jao-ke Chin-Lee <jchinlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607004}

infra/config/global/cr-buildbucket.cfg

@@ -1932,7 +1932,8 @@ buckets {
     builders {
       name: "WebKit Linux Trusty MSAN"
       dimensions: "os:Ubuntu-14.04"
-      mixins: "webkit-ci"
+      mixins: "memory-ci"
+      mixins: "webkit-ci-migration"
     }
     builders {
       name: "Mac ASAN Release Media"
@@ -1976,7 +1977,8 @@ buckets {
     builders {
       name: "WebKit Linux Trusty ASAN"
       dimensions: "os:Ubuntu-14.04"
-      mixins: "webkit-ci"
+      mixins: "memory-ci"
+      mixins: "webkit-ci-migration"
     }
     builders {
       name: "Libfuzzer Upload Mac ASan"
@@ -2037,7 +2039,8 @@ buckets {
     builders {
       name: "WebKit Linux Trusty Leak"
       dimensions: "os:Ubuntu-14.04"
-      mixins: "webkit-ci"
+      mixins: "memory-ci"
+      mixins: "webkit-ci-migration"
     }
     builders {
       name: "Linux ChromiumOS MSan Tests"

infra/config/global/luci-milo.cfg

@@ -472,7 +472,8 @@ consoles {
     name: "buildbucket/luci.chromium.ci/ios-uirefresh-simulator"
     category: "chromium.mac|ios"
     short_name: "ui"
-  }  builders {
+  }
+  builders {
     name: "buildbucket/luci.chromium.ci/ios-webview"
     category: "chromium.mac|ios"
     short_name: "web"
@@ -715,16 +716,19 @@ consoles {
   }
   builders {
     name: "buildbot/chromium.webkit/WebKit Linux Trusty ASAN"
+    name: "buildbucket/luci.chromium.ci/WebKit Linux Trusty ASAN"
     category: "chromium.webkit|linux|release"
     short_name: "asn"
   }
   builders {
     name: "buildbot/chromium.webkit/WebKit Linux Trusty MSAN"
+    name: "buildbucket/luci.chromium.ci/WebKit Linux Trusty MSAN"
     category: "chromium.webkit|linux|release"
     short_name: "msn"
   }
   builders {
     name: "buildbot/chromium.webkit/WebKit Linux Trusty Leak"
+    name: "buildbucket/luci.chromium.ci/WebKit Linux Trusty Leak"
     category: "chromium.webkit|linux|release"
     short_name: "lk"
   }