Raising content_browsertest swarming timeouts.

testing/buildbot/chromium.android.json

 {
   "Android Cronet Builder": {
     "additional_compile_targets": [
       "cronet_package"
     ]
   },
   "Android N5X Swarm Builder": {
     "gtest_tests": [
       {
         "args": [
@@ skipping 1925 matching lines @@
             }
           ],
           "dimension_sets": [
             {
               "android_devices": "4",
               "device_os": "LMY48I",
               "device_type": "hammerhead"
             }
           ],
           "expiration": 10800,
-          "hard_timeout": 1200,
+          "hard_timeout": 1800,
           "output_links": [
             {
               "link": [
                 "https://luci-logdog.appspot.com/v/?s",
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
@@ skipping 1768 matching lines @@
               "location": "bin",
               "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
             }
           ],
           "dimension_sets": [
             {
               "device_os": "MMB29Q",
               "device_type": "bullhead"
             }
           ],
-          "hard_timeout": 1200,
+          "hard_timeout": 1800,
           "output_links": [
             {
               "link": [
                 "https://luci-logdog.appspot.com/v/?s",
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
@@ skipping 22 matching lines @@
               "location": "bin",
               "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
             }
           ],
           "dimension_sets": [
             {
               "device_os": "MMB29Q",
               "device_type": "bullhead"
             }
           ],
-          "hard_timeout": 1200,
+          "hard_timeout": 1800,
           "output_links": [
             {
               "link": [
                 "https://luci-logdog.appspot.com/v/?s",
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
@@ skipping 1090 matching lines @@
       },
       {
         "test": "content_shell_test_apk"
       },
       {
         "test": "webview_instrumentation_test_apk"
       }
     ]
   }
 }