Use MediaDrm property to ignore installed keybox

Merge from Widevine repo of http://go/wvgerrit/135984

If the MediaDrm property string debugIgnoreKeyboxCount is set to 1,
then the keybox will be ignored on the next initialization. This will
force an OTA keybox reprovisioning.

Equivalently, a 1 may be written to the file
L1/debug_ignore_keybox_count.txt.

In order to test a failed reprovisioning step, a value of 2 may be
used.

Bug: 187646550
Merged-In: Ie7d34a8b355398855f4ec43dd95dd73c5907bdeb
Change-Id: Ie7d34a8b355398855f4ec43dd95dd73c5907bdeb

libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp

@@ -12,6 +12,7 @@
 #include <cstring>
 #include <list>
 #include <stdlib.h>
+#include <sstream>
 #include <string>
 
 #include "WVDrmPlugin.h"
@@ -1431,6 +1432,17 @@ Return<Status> WVDrmPlugin::setPropertyString(const hidl_string& propertyName,
         return Status::BAD_VALUE;
       }
     }
+  } else if (name == "debugIgnoreKeyboxCount") {
+    std::istringstream ss(_value);
+    uint32_t count = 0;
+    ss >> count;
+    if (ss.fail()) {
+      ALOGE("Could not parse an integer from '%s'", _value.c_str());
+      count = 0;
+      return Status::BAD_VALUE;
+    }
+    CdmResponseType res = mCDM->SetDebugIgnoreKeyboxCount(count);
+    return mapCdmResponseType(res);
   } else if (name == "decryptHash") {
     wvcdm::CdmSessionId sessionId;
     CdmResponseType res =