Add device files error detail to metrics.

[ Merge from http://go/wvgerrit/71923 ]

Plumb through the device files error detail and add the detail to
metrics.

Bug: http://b/115382201
Test: Unit tests, manual GPlay.
Change-Id: I18139f6712b6670be5fed863a97f9f03440745c7

libwvdrmengine/cdm/core/include/device_files.h

@@ -30,24 +30,27 @@ class DeviceFiles {
     kLicenseStateUnknown,
   } LicenseState;
 
+  // All error response codes start with 5000 to avoid overlap with other error
+  // spaces.
   enum ResponseType {
-    kNoError = 0,
-    kObjectNotInitialized = 1,
-    kParameterNull = 2,
-    kBasePathUnavailable = 3,
-    kFileNotFound = 4,
-    kFileOpenFailed = 5,
-    kFileWriteError = 6,
-    kFileReadError = 7,
-    kInvalidFileSize = 8,
-    kHashComputationFailed = 9,
-    kFileHashMismatch = 10,
-    kFileParseError1 = 11,
-    kFileParseError2 = 12,
-    kUnknownLicenseState = 13,
-    kIncorrectFileType = 14,
-    kIncorrectFileVersion = 15,
-    kLicenseNotPresent = 16,
+    kNoError = NO_ERROR,
+    kResponseTypeBase = 5000,
+    kObjectNotInitialized = kResponseTypeBase + 1,
+    kParameterNull = kResponseTypeBase + 2,
+    kBasePathUnavailable = kResponseTypeBase + 3,
+    kFileNotFound = kResponseTypeBase + 4,
+    kFileOpenFailed = kResponseTypeBase + 5,
+    kFileWriteError = kResponseTypeBase + 6,
+    kFileReadError = kResponseTypeBase + 7,
+    kInvalidFileSize = kResponseTypeBase + 8,
+    kHashComputationFailed = kResponseTypeBase + 9,
+    kFileHashMismatch = kResponseTypeBase + 10,
+    kFileParseError1 = kResponseTypeBase + 11,
+    kFileParseError2 = kResponseTypeBase + 12,
+    kUnknownLicenseState = kResponseTypeBase + 13,
+    kIncorrectFileType = kResponseTypeBase + 14,
+    kIncorrectFileVersion = kResponseTypeBase + 15,
+    kLicenseNotPresent = kResponseTypeBase + 16,
   };
 
   struct CdmUsageData {