Revert of media: Simplify CdmHostFile(s)

chrome/browser/media/encrypted_media_browsertest.cc

Index: chrome/browser/media/encrypted_media_browsertest.cc
diff --git a/chrome/browser/media/encrypted_media_browsertest.cc b/chrome/browser/media/encrypted_media_browsertest.cc
index f192c9b13e68fd5e8f5d0f7968baa75d4bfad46c..3c2cd1aee3b1d947670c9e7f6e54f920ef88f1fd 100644
--- a/chrome/browser/media/encrypted_media_browsertest.cc
+++ b/chrome/browser/media/encrypted_media_browsertest.cc
@@ -294,6 +294,8 @@
       RegisterPepperCdm(command_line, kClearKeyCdmBaseDirectory,
                         kClearKeyCdmAdapterFileName, kClearKeyCdmDisplayName,
                         kClearKeyCdmPepperMimeType);
+      // Need to tell CdmHostFile(s) to ignore missing CDM host files in tests.
+      command_line->AppendSwitch(switches::kIgnoreMissingCdmHostFile);
       command_line->AppendSwitchASCII(switches::kEnableFeatures,
                                       media::kExternalClearKeyForTesting.name);
     }