tests(devtools): use linux for CI (GoogleChrome#14199)

Author: adamraine

.github/scripts/generate-devtools-hash.sh

@@ -14,6 +14,6 @@ LH_ROOT="$SCRIPT_DIR/../.."
 
 cd "$LH_ROOT"
 bash .github/scripts/print-devtools-relevant-commits.sh
-md5 \
+md5sum \
   lighthouse-core/test/devtools-tests/* \
   third-party/devtools-tests/e2e/**/*.*

.github/workflows/devtools.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
   build:
-    runs-on: macos-latest # while macbots are much slower, linux reliably crashes running this
+    runs-on: ubuntu-latest
 
     steps:
     - name: Set $PATH
@@ -49,8 +49,8 @@ jobs:
         # 3) every change to file in Lighthouse repo important to running these tests.
         #
         # The number is how many times this hash key was manually updated to break the cache.
-        key: ${{ runner.os }}-8-${{ env.WEEK_OF_THE_YEAR }}-${{ hashFiles('cdt-test-hash.txt') }}
-        restore-keys: ${{ runner.os }}-8
+        key: ${{ runner.os }}-9-${{ env.WEEK_OF_THE_YEAR }}-${{ hashFiles('cdt-test-hash.txt') }}
+        restore-keys: ${{ runner.os }}-9
     - name: Set GHA_DEVTOOLS_CACHE_HIT
       if: steps.devtools-cache.outputs.cache-hit == 'true'
       run: echo "GHA_DEVTOOLS_CACHE_HIT=1" >> $GITHUB_ENV
@@ -78,7 +78,7 @@ jobs:
 
   e2e:
     needs: [build]
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
 
     steps:
     - name: git clone
@@ -120,7 +120,7 @@ jobs:
         smoke-test-shard: [1, 2, 3]
       # e.g. if set 1 fails, continue with set 2 anyway
       fail-fast: false
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
     name: DevTools smoke ${{ matrix.smoke-test-shard }}/${{ strategy.job-total }}
 
     steps:
@@ -153,10 +153,10 @@ jobs:
       working-directory: ${{ github.workspace }}/lighthouse
 
     - name: Define ToT chrome path
-      run: echo "CHROME_PATH=/Users/runner/chrome-mac-tot/Chromium.app/Contents/MacOS/Chromium" >> $GITHUB_ENV
+      run: echo "CHROME_PATH=/home/runner/chrome-linux-tot/chrome" >> $GITHUB_ENV
     - name: Install Chrome ToT
-      working-directory: /Users/runner
-      run: bash $GITHUB_WORKSPACE/lighthouse/lighthouse-core/scripts/download-chrome.sh && mv chrome-mac chrome-mac-tot
+      working-directory: /home/runner
+      run: bash ${{ github.workspace }}/lighthouse/lighthouse-core/scripts/download-chrome.sh && mv chrome-linux chrome-linux-tot
 
     - run: mkdir latest-run
       working-directory: ${{ github.workspace }}/lighthouse
@@ -165,7 +165,7 @@ jobs:
       #   errors-expired-ssl errors-infinite-loop
       # Disabled because Chrome will follow the redirect first, and Lighthouse will only ever see/run the final URL.
       #   redirects-client-paint-server redirects-multiple-server redirects-single-server redirects-single-client
-      run: yarn smoke --runner devtools --shard=${{ matrix.smoke-test-shard }}/${{ strategy.job-total }} --jobs=3 --retries=2 --invert-match a11y byte-efficiency byte-gzip dbw errors-expired-ssl errors-infinite-loop lantern-idle-callback-short legacy-javascript metrics-tricky-tti metrics-tricky-tti-late-fcp perf-budgets perf-fonts perf-frame-metrics perf-preload perf-trace-elements pwa redirects-client-paint-server redirects-history-push-state redirects-multiple-server redirects-single-server redirects-single-client redirects-scripts screenshot seo-passing seo-tap-targets
+      run: xvfb-run --auto-servernum yarn smoke --runner devtools --shard=${{ matrix.smoke-test-shard }}/${{ strategy.job-total }} --jobs=3 --retries=2 --invert-match a11y byte-efficiency byte-gzip dbw errors-expired-ssl errors-infinite-loop lantern-idle-callback-short legacy-javascript metrics-tricky-tti metrics-tricky-tti-late-fcp perf-budgets perf-fonts perf-frame-metrics perf-preload perf-trace-elements pwa redirects-client-paint-server redirects-history-push-state redirects-multiple-server redirects-single-server redirects-single-client redirects-scripts screenshot seo-passing seo-tap-targets
       working-directory: ${{ github.workspace }}/lighthouse
 
     - name: Upload failures