Adds ability to filter the set of tests that are run by a bot

scripts/slave/recipes/chromium_trybot.expected/compile_because_of_analyze_with_filtered_tests_no_builder.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "tryserver.chromium.linux",
       "--builder",
       "linux_chromium_rel",
@@ skipping 58 matching lines @@
     "cmd": [
       "python",
       "-u",
       "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "[SLAVE_BUILD]/src/testing/buildbot/chromium_trybot.json",
       "/path/to/tmp/json"
     ],
     "name": "read test spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: testing/buildbot/chromium_trybot.json@@@",
-      "@@@STEP_LOG_LINE@json.output@[@@@",
-      "@@@STEP_LOG_LINE@json.output@  \"base_unittests\", @@@",
-      "@@@STEP_LOG_LINE@json.output@  {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"platforms\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"linux\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"mac\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    ], @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"test\": \"mojo_common_unittests\"@@@",
-      "@@@STEP_LOG_LINE@json.output@  }, @@@",
-      "@@@STEP_LOG_LINE@json.output@  {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"args\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"--test-launcher-print-test-stdio=always\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    ], @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"chromium_configs\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"chromium_chromeos\", @@@",
-      "@@@STEP_LOG_LINE@json.output@      \"chromium_chromeos_clang\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    ], @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"platforms\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"linux\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    ], @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"test\": \"sandbox_linux_unittests\"@@@",
-      "@@@STEP_LOG_LINE@json.output@  }, @@@",
-      "@@@STEP_LOG_LINE@json.output@  {@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"exclude_builders\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@      \"tryserver.chromium.win:win_chromium_x64_rel\"@@@",
-      "@@@STEP_LOG_LINE@json.output@    ], @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"test\": \"browser_tests\"@@@",
-      "@@@STEP_LOG_LINE@json.output@  }@@@",
-      "@@@STEP_LOG_LINE@json.output@]@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"gtest_tests\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"swarming\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@        \"can_use_on_swarming_builders\": true@@@",
+      "@@@STEP_LOG_LINE@json.output@      }, @@@",
+      "@@@STEP_LOG_LINE@json.output@      \"test\": \"base_unittests\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }, @@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"test\": \"browser_tests\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }, @@@",
+      "@@@STEP_LOG_LINE@json.output@    {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"test\": \"unittests\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
+  {
+    "cmd": [
+      "git",
+      "diff",
+      "--cached",
+      "--name-only"
+    ],
+    "cwd": "[SLAVE_BUILD]/src",
+    "name": "git diff to analyze patch",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "[SLAVE_BUILD]/src/build/gyp_chromium",
+      "--analyzer2",
+      "{\"files\": [\"foo.cc\"], \"targets\": [\"base_unittests\", \"browser_tests\", \"unittests\"]}"
+    ],
+    "name": "analyze",
+    "stdout": "/path/to/tmp/json",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"status\": \"Found dependency\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"targets\": [@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"browser_tests\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"base_unittests\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  ]@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
     "env": {
       "GYP_DEFINES": "component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]/goma' target_arch=x64 use_goma=1"
     },
@@ skipping 12 matching lines @@
       "ninja",
       "--compiler",
       "goma",
       "--goma-dir",
       "[BUILD]/goma",
       "--",
       "all",
       "chrome",
       "chrome",
       "base_unittests",
-      "mojo_common_unittests",
       "browser_tests",
+      "unittests",
       "chrome"
     ],
     "name": "compile (with patch)"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/buildtools/checkdeps/checkdeps.py",
       "--json",
@@ skipping 145 matching lines @@
       "-u",
       "[BUILD]/scripts/slave/runtest.py",
       "--target",
       "Release",
       "--xvfb",
       "--factory-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--annotate=gtest",
-      "--test-type=mojo_common_unittests",
+      "--test-type=browser_tests",
       "--test-launcher-summary-output",
       "/path/to/tmp/json",
       "--builder-name=linux_chromium_rel",
       "--slave-name=TestSlavename",
       "--build-number=571",
-      "mojo_common_unittests"
+      "browser_tests"
     ],
-    "name": "mojo_common_unittests (with patch)"
+    "name": "browser_tests (with patch)"
   },
   {
     "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/runtest.py",
       "--target",
       "Release",
       "--xvfb",
       "--factory-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--annotate=gtest",
-      "--test-type=browser_tests",
+      "--test-type=unittests",
       "--test-launcher-summary-output",
       "/path/to/tmp/json",
       "--builder-name=linux_chromium_rel",
       "--slave-name=TestSlavename",
       "--build-number=571",
-      "browser_tests"
+      "unittests"
     ],
-    "name": "browser_tests (with patch)"
+    "name": "unittests (with patch)"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/chrome/test/nacl_test_injection/buildbot_nacl_integration.py",
       "--mode",
       "Release",
       "--json_build_results_output_file",
       "/path/to/tmp/json"
     ],
     "name": "nacl_integration (with patch)",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@[]@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/mojo/tools/run_mojo_python_tests.py",
       "--write-full-results-to",
       "/path/to/tmp/json"
     ],
     "name": "mojo_python_tests (with patch)"
   }
 ]