Switched remaining GPU test bots to be pure testers, triggered by builders.

masters/master.chromium.gpu.fyi/slaves.cfg

Index: masters/master.chromium.gpu.fyi/slaves.cfg
diff --git a/masters/master.chromium.gpu.fyi/slaves.cfg b/masters/master.chromium.gpu.fyi/slaves.cfg
index c73f3a46ce58e580c9851c4052ddcbf642e9a131..a96feccb3d1dde773209e0b0f08901772e6dd0bb 100644
--- a/masters/master.chromium.gpu.fyi/slaves.cfg
+++ b/masters/master.chromium.gpu.fyi/slaves.cfg
@@ -30,9 +30,10 @@ slaves = [
     'os': 'win',
     'version': 'xp',
     'bits': '32',
-    'recipe': 'gpu/build_and_test',
+    'recipe': 'gpu/download_and_test',
     'build_config': 'Release',
     'perf_id': 'gpu-fyi-winxp-release-nvidia',
+    'triggered_by': 'GPU Win Builder',
   },
   {
     'master': 'ChromiumGPUFYI',
@@ -41,8 +42,9 @@ slaves = [
     'os': 'win',
     'version': 'xp',
     'bits': '32',
-    'recipe': 'gpu/build_and_test',
+    'recipe': 'gpu/download_and_test',
     'build_config': 'Debug',
+    'triggered_by': 'GPU Win Builder (dbg)',
   },
   {
     'master': 'ChromiumGPUFYI',
@@ -91,9 +93,10 @@ slaves = [
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
-    'recipe': 'gpu/build_and_test',
+    'recipe': 'gpu/download_and_test',
     'build_config': 'Release',
     'perf_id': 'gpu-fyi-linux-release-intel',
+    'triggered_by': 'GPU Linux Builder',
   },
   {
     'master': 'ChromiumGPUFYI',
@@ -102,9 +105,10 @@ slaves = [
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
-    'recipe': 'gpu/build_and_test',
+    'recipe': 'gpu/download_and_test',
     'build_config': 'Release',
     'perf_id': 'gpu-fyi-linux-release-ati',
+    'triggered_by': 'GPU Linux Builder',
   },
   {
     'master': 'ChromiumGPUFYI',