Added GYP defines to dump linux symbols for gpu perf bots and trybots.

scripts/slave/recipes/gpu/build_and_test.expected/linux_debug_tryserver.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
     "name": "cleanup temp"
   },
   {
@@ skipping 65 matching lines @@
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
     "env": {
-      "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=shared_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
+      "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=shared_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 linux_dump_symbols=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[isolate]/resources/find_isolated_tests.py",
       "--build-dir",
       "[SLAVE_BUILD]/src/out/Debug",
@@ skipping 44 matching lines @@
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/build/gyp_chromium",
       "--analyzer",
       "{\"files\": [\"foo.cc\"], \"targets\": [\"angle_unittests_run\", \"content_gl_tests_run\", \"content_unittests_run\", \"gl_tests_run\", \"gles2_conform_test_run\", \"gpu_unittests_run\", \"media_unittests_run\", \"tab_capture_end2end_tests_run\", \"telemetry_gpu_test_run\"]}",
       "/path/to/tmp/json"
     ],
     "env": {
-      "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=shared_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
+      "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=shared_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 linux_dump_symbols=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
     },
     "name": "analyze",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"build_targets\": [@@@",
       "@@@STEP_LOG_LINE@json.output@    \"All\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"angle_unittests\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"app_list_demo\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"app_list_unittests\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"app_shell\", @@@",
@@ skipping 702 matching lines @@
     ],
     "env": {
       "CHROME_DEVEL_SANDBOX": "/opt/chromium/chrome_sandbox"
     },
     "name": "gpu_rasterization_tests",
     "~followup_annotations": [
       "@@@STEP_TEXT@<br/>failures:<br/>Test.Test1<br/>@@@"
     ]
   }
 ]