Widevine Metrics System

This change is the complete Widevine metrics system. It will
measure and record runtime information about what is happening
in the CDM - such as errors and throughput.

Bug: 33745339
Bug: 26027857
Change-Id: Ic9a82074f1e2b72c72d751b235f8ae361232787d

libwvdrmengine/cdm/core/test/cdm_session_unittest.cpp

@@ -98,6 +98,7 @@ class MockDeviceFiles : public DeviceFiles {
 
 class MockCryptoSession : public CryptoSession {
  public:
+  MockCryptoSession() : CryptoSession(NULL) { }
   MOCK_METHOD1(GetClientToken, bool(std::string*));
   MOCK_METHOD1(GetProvisioningToken, bool(std::string*));
   MOCK_METHOD0(GetPreProvisionTokenType, CdmClientTokenType());

libwvdrmengine/cdm/core/test/license_unittest.cpp

@@ -79,6 +79,7 @@ const std::string kLicenseRequestSignature = a2bs_hex(
 
 class MockCryptoSession : public CryptoSession {
  public:
+  MockCryptoSession() : CryptoSession(NULL) { }
   MOCK_METHOD0(IsOpen, bool());
   MOCK_METHOD1(GenerateRequestId, bool(std::string*));
   MOCK_METHOD1(UsageInformationSupport, bool(bool*));

libwvdrmengine/cdm/core/test/policy_engine_constraints_unittest.cpp

@@ -60,6 +60,8 @@ const int64_t kHdcpInterval = 10;
 
 class HdcpOnlyMockCryptoSession : public CryptoSession {
  public:
+  HdcpOnlyMockCryptoSession() : CryptoSession(NULL) { }
+
   MOCK_METHOD2(GetHdcpCapabilities, bool(HdcpCapability*, HdcpCapability*));
 };
 

libwvdrmengine/cdm/core/test/service_certificate_unittest.cpp

@@ -44,6 +44,7 @@ const std::string kTestSignedCertificate = a2bs_hex(
 
 class MockCryptoSession : public CryptoSession {
  public:
+  MockCryptoSession() : CryptoSession(NULL) { }
   MOCK_METHOD2(GetRandom, bool(size_t, uint8_t*));
 };