Tests source origin difference for cached resources.

This succeeds if not crashing after applying memory pressure (https://bugs.webkit.org/show_bug.cgi?id=163887).
Test 1 PASS: Loaded img data:image/svg+xml;base64, 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 from localhost:8000 (crossOrigin=anonymous)
Test 2 PASS: Loaded img data:image/svg+xml;base64, PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rIj48cmVjdCB4PSIwIiB5PSIwIiB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJMaWdodFNlYUdyZWVuIi8+PHJlY3QgeD0iMjAiIHk9IjIwIiB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJyZWQiLz48aW1hZ2UgeD0iMjAiIHk9IjIwIiB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB4bGluazpocmVmPSJkYXRhOmltYWdlL3N2Zyt4bWw7YmFzZTY0LFBITjJaeUI0Yld4dWN6MGlhSFIwY0RvdkwzZDNkeTUzTXk1dmNtY3ZNakF3TUM5emRtY2lJSGh0Ykc1ek9uaHNhVzVyUFNKb2RIUncNCk9pOHZkM2QzTG5jekxtOXlaeTh4T1RrNUwzaHNhVzVySWo0OGNtVmpkQ0I0UFNJd0lpQjVQU0l3SWlCM2FXUjBhRDBpTVRBd0pTSWcNCmFHVnBaMmgwUFNJeE1EQWxJaUJtYVd4c1BTSm5jbVZsYmlJdlBqeHlaV04wSUhnOUlqSXdJaUI1UFNJeU1DSWdkMmxrZEdnOUlqRXcNCk1DVWlJR2hsYVdkb2REMGlNVEF3SlNJZ1ptbHNiRDBpY21Wa0lpOCtQR2x0WVdkbElIZzlJakl3SWlCNVBTSXlNQ0lnZDJsa2RHZzkNCklqRXdNQ1VpSUdobGFXZG9kRDBpTVRBd0pTSWdlR3hwYm1zNmFISmxaajBpWkdGMFlUcHBiV0ZuWlM5emRtY3JlRzFzTzJKaGMyVTINCk5DeFFTRTR5V25sQ05HSlhlSFZqZWpCcFlVaFNNR05FYjNaTU0yUXpaSGsxTTAxNU5YWmpiV04yVFdwQmQwMURPWHBrYldOcFNVaG8NCmRHSkhOWHBQYm1oellWYzFjbEJUU205a1NGSjNEUXBQYVRoMlpETmtNMHh1WTNwTWJUbDVXbms0ZUU5VWF6Vk1NMmh6WVZjMWNrbHENCk5EaGpiVlpxWkVOQ05GQlRTWGRKYVVJMVVGTkpkMGxwUWpOaFYxSXdZVVF3YVUxVVFYZEtVMGxuRFFwaFIxWndXakpvTUZCVFNYaE4NClJFRnNTV2xDYldGWGVITlFVMHB6WVZka2IyUkZaSGxhVjFaMVNXazRLMUJJU214Wk0xRm5aVVF3YVUxcVFXbEpTR3M1U1dwSmQwbHANClFqTmhWMUl3RFFwaFJEQnBUVlJCZDBwVFNXZGhSMVp3V2pKb01GQlRTWGhOUkVGc1NXbENiV0ZYZUhOUVUwcDVXbGRSYVV4Nk5EaGgNClZ6Rm9XakpWWjJWRU1HbE5ha0ZwU1Vock9VbHFTWGRKYVVJekRRcGhWMUl3WVVRd2FVMVVRWGRLVTBsbllVZFdjRm95YURCUVUwbDQNClRVUkJiRWxwUWpSaVIyeDFZWHB3YjJOdFZtMVFVMHByV1ZoU2FFOXRiSFJaVjJSc1RETk9NbHA1ZERSaVYzYzNEUXBaYlVaNldsUloNCk1FeEdRa2xVYWtwaFpWVkpNRmxzWkRSa1YwNDJUVWRzYUZOR1NYZFpNRkoyWkd0M2VscEVUbXRsVkZWNlZGaHJNV1J0VG5SWk0xcE8NCllXdEdNMVJWVFRWbGJWSjBEUXBaTW14S1UwZG9NRmxyWXpGbGF6bDFZVWhPYUZaNlZubFZSazVMWWpKU1NWVnVZMDVEYXpsd1QwaGENCmEwMHlVWHBVUnpWcVpXdDRkRTlZYkdGbFZHZzBWREZTY2s1VmQzcGhTRTVvRFFwV2VsWjVVMWR2TUU5SFRuUldiWEJyVVRCSk1GVkcNClRrcGtNR3h3VVdwV1VWVXdiRE5UVjJ4RFRUSkdXRlZxUW1oU1JFSndWRlpTUW1Rd2NGUlRWMk5PUTIxR1NGWnVRbUZOYldkM0RRcFYNClJrNUtaVVV4UlZGWGVFcGhWVXAwV1Zaa05HTXhRbFJUYms1b1ZucEdjMVZxVGt0aVJuQllUa2RzVFdWcVVUUlpNakZYWVcxU1JGRnENClVsRlZNR3cxVkZWT1Nsb3lWbFZOUjJ4T0RRcGhhMFp3VTFWb2EyTkdjRWxWYlRoT1EyeENWRk5ZYUU1U1JVWnpVMWRzUTJJeGNGaGkNClJ6Vm9VMFpGTlZOWGNFWmtNREZFVmxkc1NsSXhjSGRaYTJRelQxVnNkVk50ZUdGUk1Hd3lEUXBWUjNBMFkwZEtXRkp0TldGVk1Fa3cNClZVWk9TbVZWTVVSVFYyUnNWa1JDY0ZSWGNFSmhWV3hKV2toQlRrTnNjRWxWYlRsUlZUQnNORlJWVWtKaVJXeHdVVzA1WVZZeWVIVloNClZXaFNEUXBQVld4eFVsaGtUbEV4Vm5CVFZXaHZZekpHV0U1WVNsQmlWMmcxVjJ4a1drOVZiSFJWYldoclVqQlZNbGxXWTNoaFJtOTUNClZsaGFhbEo2Vm5WVWVrcExZVWROZVZaVVNVNURhelZFRFFwbFNFSlhZVEJ3VVZaWE5XcGtNVTEzV2tjMWFVMUZXa05WVmxaSFZERlYNCmVGWnRPVk5XYkZwMVZWWldSMUZzU1hoU2EwcFNWbFZhUkZsVVFrOVJiR1JXVW10S1VsWlZiM3BVYTJoRERRcFdNVnBXVW10S1VsWlYNCldrTldNRlV4VmtaV2NWRnJiMDVEYkVaWlUyNXdUMUl3TUhsV1ZsWkhVV3hHVm1SRmRGUmlSWEJIVlcxNFYySkdVblZUYWtKT1VtdGENClIxWkhkRWRSYkVaV0RRcGlSRTVQVFVVMVJsZHRjRzVPVm05NVdYcEdVbUY2YTNwWmEyaEhXVlphUm1GR1VtbFhSa3AxVlZSQ2MySnMNClJsWlNiRTFPUTJ4S1ZsUnJTbEpOUlZwNVZsZDBSMkpzUmxoaVJYQmhEUXBOUlZwRFZsZDBWMUpHUmxaVWEwcG9UVlZ3UTFkcVFrZGoNClJrNVlXa1ZLVWxacmNFZFZWRUpIVWtaR1dHUkdUbEpXTWxKRFdWWldjMkpzUmxaU2JFNVRWbFUxUTFWVVFrZGpiRlp5RFFwU2JUUk8NClEyeEdXR0pGY0dGTlJWcERWbGQwVjFKR1JsWlVhMHBvVFZWd1ExZHFRa2RqUms1WVdrVktVbFpyY0VkVlZFSkhVa1pHV0dSR1RsSlcNCk1sSkRXVlpXYzJKc1JsWlNiRTVURFFwV1ZUVkRWVlJDUjJOc1ZuSlNiVFZTVmpKNFMxZHFRa2RSYkZaeVZtdFJUa05zUmxaVWEwcG8NClRWVndRMWRxUWtkalJrNVlXa1ZLVWxacmNFZFZWRUpIVWtaR1dHUkdUbEpXTWxKRERRcFpWbFp6WW14R1ZsSnNUbE5XVlRWRFZWUkMNClIyTnNWbkpTYlRWU1ZqSlNTMVZzVmtkU2JGWnlWbXRTVWxaVk5VTlpWRVpMVVcxU2RWTnRNRTVEYlU1elZXeEtWVkpYVW05Vk1GSlANCkRRcGxSbXh5VW10S1VsWlZXa05WVjNSM1ZURmFWVlpyV21waVdGSk1WMnBLYTJKc1FsVk5SMnhSWVc1a01sbFdZM2hoUm05NVZsTjANClVWRjZiRFphUnpGcVN6QlNVbUl3TlVSYWVqQTVEUXBKYWpRNFRESnNkRmxYWkd4UWFuZDJZek5hYmxCblBUMGlQand2YVcxaFoyVSsNClBDOXpkbWMrIj48L2ltYWdlPjwvc3ZnPg== from localhost:8080 (crossOrigin=anonymous)
PASS applying memory pressure