Add Windows and Mac laptops to chromium.perf.fyi for power testing.

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

Index: masters/master.chromium.perf.fyi/slaves.cfg
diff --git a/masters/master.chromium.perf.fyi/slaves.cfg b/masters/master.chromium.perf.fyi/slaves.cfg
index f6997ee3a7ed048cc780a4346db3df56d070cce8..588987c2f2d0e9dcda3e98d9589a100f1e8efd68 100644
--- a/masters/master.chromium.perf.fyi/slaves.cfg
+++ b/masters/master.chromium.perf.fyi/slaves.cfg
@@ -27,7 +27,7 @@ slaves = [
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build85-b1',
-    'builder': 'Win Power Perf (DELL)',
+    'builder': 'Win Power High-DPI Perf',
     'os': 'win',
     'version': 'win10',
     'bits': '64',
@@ -35,7 +35,15 @@ slaves = [
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build81-b1',
-    'builder': 'Win Power Perf (HP)',
+    'builder': 'Win Power Low-End 2GB Perf',
+    'os': 'win',
+    'version': 'win10',
+    'bits': '64',
+  },
+  {
+    'master': 'ChromiumPerfFyi',
+    'hostname': 'build29-b1',
+    'builder': 'Win Power Low-End 4GB Perf',
     'os': 'win',
     'version': 'win10',
     'bits': '64',
@@ -74,8 +82,24 @@ slaves = [
   },
   {
     'master': 'ChromiumPerfFyi',
+    'hostname': 'build35-b1',
+    'builder': 'Mac Power Dual-GPU Perf',
+    'os': 'mac',
+    'version': '10.9',
+    'bits': '64',
+  },
+  {
+    'master': 'ChromiumPerfFyi',
+    'hostname': 'build36-b1',
+    'builder': 'Mac Power Low-End Perf',
+    'os': 'mac',
+    'version': '10.9',
+    'bits': '64',
+  },
+  {
+    'master': 'ChromiumPerfFyi',
     'hostname': 'build83-b1',
-    'builder': 'Mac Retina Power Perf',
+    'builder': 'Mac Test Retina Perf',
     'os': 'mac',
     'version': '10.9',
     'bits': '64',