Include otool for Telemetry

Includes the hermetic Xcode binary directory as a data dependency for
Telemetry tests on Mac. Xcode is required in order to symbolize
minidumps on Mac, and this previously worked by accident due to Xcode
previously being installed system-wide. generate_breakpad_symbols.py
already supports using the hermetic binary, so we just need to ensure
that it's available on a swarming task.

Also re-enables the tests that were disabled due to the missing Xcode
binaries.

Bug: 1110441
Change-Id: Icb703e08c65c27c4b6300710033be138a0bd4da3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2324883
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#792823}

tools/perf/chrome_telemetry_build/BUILD.gn

@@ -125,6 +125,14 @@ group("telemetry_chrome_test_without_chrome") {
     ]
   }
 
+  if (is_mac) {
+    data += [
+      # Required for the hermetic otool binary, which is required for
+      # symbolizing minidumps on Mac.
+      "//build/mac_files/xcode_binaries/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/",
+    ]
+  }
+
   if (is_android) {
     data += [
       # TODO(httpss://crbug.com/833808): Remove this once bots always set

tools/perf/core/minidump_unittest.py

@@ -35,7 +35,6 @@ class BrowserMinidumpTest(tab_test_case.TabTestCase):
   # still read-only, so skip the test in that case.
   @decorators.Disabled(
       'chromeos-local',
-      'mac',  #https://crbug.com/1110441
       'win'  # https://crbug.com/1084931
   )
   def testSymbolizeMinidump(self):
@@ -81,7 +80,6 @@ class BrowserMinidumpTest(tab_test_case.TabTestCase):
   # still read-only, so skip the test in that case.
   @decorators.Disabled(
       'chromeos-local',
-      'mac',  # https://crbug.com/1110441
       'win'  # https://crbug.com/1084931
   )
   def testMultipleCrashMinidumps(self):