Make tab_capture_end2end_tests work as a regular windowed_test_launcher.

testing/buildbot/chromium.gpu.json

Index: testing/buildbot/chromium.gpu.json
diff --git a/testing/buildbot/chromium.gpu.json b/testing/buildbot/chromium.gpu.json
index 43b6080a0f4945ad1a233ced594567007e43cae5..52236dc4c7751f452ebaec10130a30e0ab80bbda 100644
--- a/testing/buildbot/chromium.gpu.json
+++ b/testing/buildbot/chromium.gpu.json
@@ -359,8 +359,13 @@
       },
       {
         "args": [
-          "--use-gpu-in-tests"
+          "--enable-gpu",
+          "--test-launcher-bot-mode",
+          "--test-launcher-jobs=1",
+          "--gtest_filter=CastStreamingApiTestWithPixelOutput.EndToEnd*:TabCaptureApiPixelTest.EndToEnd*",
+          "--no-xvfb"
         ],
+        "name": "tab_capture_end2end_tests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -370,7 +375,7 @@
             }
           ]
         },
-        "test": "gl_tests",
+        "test": "browser_tests",
         "use_xvfb": false
       },
       {
@@ -386,10 +391,13 @@
             }
           ]
         },
-        "test": "gl_unittests",
+        "test": "gl_tests",
         "use_xvfb": false
       },
       {
+        "args": [
+          "--use-gpu-in-tests"
+        ],
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -399,7 +407,7 @@
             }
           ]
         },
-        "test": "tab_capture_end2end_tests",
+        "test": "gl_unittests",
         "use_xvfb": false
       }
     ],
@@ -1010,8 +1018,12 @@
       },
       {
         "args": [
-          "--use-gpu-in-tests"
+          "--enable-gpu",
+          "--test-launcher-bot-mode",
+          "--test-launcher-jobs=1",
+          "--gtest_filter=CastStreamingApiTestWithPixelOutput.EndToEnd*:TabCaptureApiPixelTest.EndToEnd*"
         ],
+        "name": "tab_capture_end2end_tests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -1021,7 +1033,7 @@
             }
           ]
         },
-        "test": "gl_tests",
+        "test": "browser_tests",
         "use_xvfb": false
       },
       {
@@ -1037,10 +1049,13 @@
             }
           ]
         },
-        "test": "gl_unittests",
+        "test": "gl_tests",
         "use_xvfb": false
       },
       {
+        "args": [
+          "--use-gpu-in-tests"
+        ],
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -1050,7 +1065,7 @@
             }
           ]
         },
-        "test": "tab_capture_end2end_tests",
+        "test": "gl_unittests",
         "use_xvfb": false
       }
     ],
@@ -1675,8 +1690,12 @@
       },
       {
         "args": [
-          "--use-gpu-in-tests"
+          "--enable-gpu",
+          "--test-launcher-bot-mode",
+          "--test-launcher-jobs=1",
+          "--gtest_filter=CastStreamingApiTestWithPixelOutput.EndToEnd*:TabCaptureApiPixelTest.EndToEnd*"
         ],
+        "name": "tab_capture_end2end_tests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -1687,7 +1706,7 @@
             }
           ]
         },
-        "test": "gl_tests",
+        "test": "browser_tests",
         "use_xvfb": false
       },
       {
@@ -1704,10 +1723,13 @@
             }
           ]
         },
-        "test": "gl_unittests",
+        "test": "gl_tests",
         "use_xvfb": false
       },
       {
+        "args": [
+          "--use-gpu-in-tests"
+        ],
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -1718,7 +1740,7 @@
             }
           ]
         },
-        "test": "tab_capture_end2end_tests",
+        "test": "gl_unittests",
         "use_xvfb": false
       }
     ],
@@ -2358,8 +2380,12 @@
       },
       {
         "args": [
-          "--use-gpu-in-tests"
+          "--enable-gpu",
+          "--test-launcher-bot-mode",
+          "--test-launcher-jobs=1",
+          "--gtest_filter=CastStreamingApiTestWithPixelOutput.EndToEnd*:TabCaptureApiPixelTest.EndToEnd*"
         ],
+        "name": "tab_capture_end2end_tests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -2369,7 +2395,7 @@
             }
           ]
         },
-        "test": "gl_tests",
+        "test": "browser_tests",
         "use_xvfb": false
       },
       {
@@ -2385,10 +2411,13 @@
             }
           ]
         },
-        "test": "gl_unittests",
+        "test": "gl_tests",
         "use_xvfb": false
       },
       {
+        "args": [
+          "--use-gpu-in-tests"
+        ],
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
@@ -2398,7 +2427,7 @@
             }
           ]
         },
-        "test": "tab_capture_end2end_tests",
+        "test": "gl_unittests",
         "use_xvfb": false
       },
       {