Update legacy Tuple-using code.

content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc

Index: content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc
diff --git a/content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc b/content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc
index 4a9c5d2db38f85a0cb2a30f75fc7fbe290544745..c420942016967c746d629b8dc0d71132b8e3efe9 100644
--- a/content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc
+++ b/content/browser/renderer_host/media/webrtc_identity_service_host_unittest.cc
@@ -116,10 +116,10 @@ class WebRTCIdentityServiceHostTest : public ::testing::Test {
     IPC::Message ipc = host_->GetLastMessage();
     EXPECT_EQ(ipc.type(), WebRTCIdentityHostMsg_RequestFailed::ID);
 
-    Tuple2<int, int> error_in_message;
+    Tuple<int, int> error_in_message;
     WebRTCIdentityHostMsg_RequestFailed::Read(&ipc, &error_in_message);
-    EXPECT_EQ(FAKE_SEQUENCE_NUMBER, error_in_message.a);
-    EXPECT_EQ(error, error_in_message.b);
+    EXPECT_EQ(FAKE_SEQUENCE_NUMBER, get<0>(error_in_message));
+    EXPECT_EQ(error, get<1>(error_in_message));
   }
 
   void VerifyIdentityReadyMessage(const std::string& cert,
@@ -128,11 +128,11 @@ class WebRTCIdentityServiceHostTest : public ::testing::Test {
     IPC::Message ipc = host_->GetLastMessage();
     EXPECT_EQ(ipc.type(), WebRTCIdentityHostMsg_IdentityReady::ID);
 
-    Tuple3<int, std::string, std::string> identity_in_message;
+    Tuple<int, std::string, std::string> identity_in_message;
     WebRTCIdentityHostMsg_IdentityReady::Read(&ipc, &identity_in_message);
-    EXPECT_EQ(FAKE_SEQUENCE_NUMBER, identity_in_message.a);
-    EXPECT_EQ(cert, identity_in_message.b);
-    EXPECT_EQ(key, identity_in_message.c);
+    EXPECT_EQ(FAKE_SEQUENCE_NUMBER, get<0>(identity_in_message));
+    EXPECT_EQ(cert, get<1>(identity_in_message));
+    EXPECT_EQ(key, get<2>(identity_in_message));
   }
 
  protected: