Deploy single non-swarmed MacBook Pro Retina with AMD GPU.

This is for testing the upgrade to 10.11.

BUG=641066
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=dpranke@chromium.org,zmo@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2281693002
Cr-Commit-Position: refs/heads/master@{#414495}

content/test/gpu/generate_buildbot_json.py

@@ -335,6 +335,17 @@ FYI_WATERFALL = {
       'swarming': True,
       'os_type': 'mac',
     },
+    'Mac Retina Release (AMD)': {
+      'swarming_dimensions': {
+        'gpu': '1002:6821',
+        'hidpi': '1',
+        'os': 'Mac-10.11'
+      },
+      'build_config': 'Release',
+      # This bot is a one-off for testing purposes.
+      'swarming': False,
+      'os_type': 'mac',
+    },
     'Linux Release (NVIDIA)': {
       'swarming_dimensions': {
         'gpu': '10de:104a',

tools/mb/mb_config.pyl

@@ -327,6 +327,7 @@
       'Mac 10.10 Retina Release (AMD)': 'none',
       'Mac Retina Debug': 'none',
       'Mac Retina Release': 'none',
+      'Mac Retina Release (AMD)': 'none',
       'Win7 Debug (ATI)': 'none',
       'Win7 Debug (NVIDIA)': 'none',
       'Win7 Debug (New Intel)': 'none',