CL https://codereview.chromium.org/2245513002/ was reverted as it broke EarlGrey tests.

Before:
          cmd LC_ID_DYLIB
      cmdsize 64
         name @rpath/EarlGrey.framework/EarlGrey (offset 24)
After:
          cmd LC_ID_DYLIB
      cmdsize 72
         name obj/ios/third_party/earl_grey/x64/EarlGrey (offset 24)

Fix EarlGrey tests and reland.