Duplicate all src-side configs for chromium.chrome bots as chrome.

Ran a led build after switching their recipe configs:
https://ci.chromium.org/swarming/task/45ad9774aebf2610?server=chrome-swarming.appspot.com

It's trying to read 'src/testing/buildbot/chrome.json'. This should take
care of that.

Bug: 938113
Change-Id: I20c88e6d66c4c3c6092f5449d40d6d50e80b1c2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1678942
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Auto-Submit: Ben Pastene <bpastene@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672614}

testing/buildbot/waterfalls.pyl

@@ -9,6 +9,86 @@
 # * trailing commas are allowed.
 
 [
+  {
+    'name': 'chrome',
+    'machines': {
+      'chromeos-amd64-generic-google-rel': {
+        'additional_compile_targets': [
+          'chrome',
+        ],
+      },
+      'chromeos-betty-google-rel': {
+        'additional_compile_targets': [
+          'chromiumos_preflight',
+        ],
+        'test_suites': {
+          'gtest_tests': 'chromeos_device_friendly_gtests',
+          'isolated_scripts': 'chromeos_isolated_scripts',
+        },
+        'swarming': {
+          'dimension_sets': [
+            {
+              'kvm': '1',
+              'os': 'Ubuntu-16.04',
+              'pool': 'chrome.tests.cros-vm',
+            },
+          ],
+        },
+      },
+      'linux-chromeos-google-rel': {
+        'additional_compile_targets': [
+          'chrome',
+          'chrome_sandbox',
+          'linux_symbols',
+          'symupload'
+        ],
+        'mixins': [
+          'chrome-swarming-pool',
+          'linux-trusty',
+        ],
+        'test_suites': {
+          'gtest_tests': 'linux_chromeos_gtests',
+        },
+      },
+      'linux-google-rel': {
+        'additional_compile_targets': [
+          'chrome',
+          'chrome/installer/linux',
+        ],
+        'mixins': [
+          'chrome-swarming-pool',
+        ],
+        'test_suites': {
+          'isolated_scripts': 'chrome_sizes',
+        },
+      },
+      'mac-google-rel': {
+        'additional_compile_targets': [
+          'chrome',
+        ],
+        'mixins': [
+          'chrome-swarming-pool',
+          'mac_10.14',
+        ],
+        'test_suites': {
+          'isolated_scripts': 'chrome_sizes',
+        },
+      },
+      'win-google-rel': {
+        'additional_compile_targets': [
+          'chrome',
+          'chrome_official_builder',
+        ],
+        'mixins': [
+          'chrome-swarming-pool',
+          'win10',
+        ],
+        'test_suites': {
+          'isolated_scripts': 'chrome_sizes',
+        },
+      },
+    },
+  },
   {
     'name': 'chromium',
     'machines': {
@@ -542,6 +622,7 @@
       },
     },
   },
+  # TODO(bpastene): Remove 'chromium.chrome' when it's been switched to 'chrome'
   {
     'name': 'chromium.chrome',
     'machines': {

tools/mb/mb_config.pyl

@@ -13,6 +13,15 @@
   # config names (where each config name is a key in the 'configs' dict,
   # below). MB uses this dict to look up which config to use for a given bot.
   'masters': {
+    'chrome': {
+      'chromeos-amd64-generic-google-rel': 'official_cros_chrome_sdk',
+      'chromeos-betty-google-rel': 'official_cros_chrome_sdk_headless_ozone',
+      'linux-chromeos-google-rel': 'official_goma_chromeos_minimal_symbols',
+      'linux-google-rel': 'official_goma',
+      'mac-google-rel': 'official_goma',
+      'win-google-rel': 'official_goma_x86',
+    },
+
     'chromeos.chrome': {
       'chrome-tot-chromeos-amd64-generic': 'cros_chrome_sdk',
       'Chrome4CROS Packages': 'chromeos_with_codecs_release_bot',
@@ -78,6 +87,7 @@
       'x86 Emulator Tester': 'android_debug_static_bot_x86',
     },
 
+    # TODO(bpastene): Remove 'chromium.chrome' when it's been switched to 'chrome'
     'chromium.chrome': {
       'chromeos-amd64-generic-google-rel': 'official_cros_chrome_sdk',
       'chromeos-betty-google-rel': 'official_cros_chrome_sdk_headless_ozone',