Revert of Add unit tests for CdmAdapter

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index ef8bf9497898210f29ffb01fefcadf8c707d257e..a7dac69db231e241b1248680e23ed30548866f8d 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -658,7 +658,7 @@
     "test/data/",
   ]
 
-  # TODO(wolenetz): Fix size_t to int truncation in win64.
+  # TODO(wolenetz): Fix size_t to int trunctaion in win64.
   # See http://crbug.com/171009
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
@@ -693,12 +693,6 @@
       "//media/base/android:media_java",
       "//ui/android:ui_java",
     ]
-  }
-
-  # If ExternalClearKey is built, we can test CdmAdapter.
-  if (enable_pepper_cdms) {
-    sources += [ "cdm/cdm_adapter_unittest.cc" ]
-    deps += [ "//media/cdm/ppapi:clearkeycdm" ]
   }
 
   if (media_use_ffmpeg) {