Rename net::ct::LogEntry to SignedEntryData and clarify the comment.

net/test/ct_test_util.h

Index: net/test/ct_test_util.h
diff --git a/net/test/ct_test_util.h b/net/test/ct_test_util.h
index d39079690ad5c6e9ee42839f32917433c0ba733d..1eabdf3121bfbbb54a9072b0e545e3fb66428535 100644
--- a/net/test/ct_test_util.h
+++ b/net/test/ct_test_util.h
@@ -20,7 +20,7 @@ namespace net {
 namespace ct {
 
 struct DigitallySigned;
-struct LogEntry;
+struct SignedEntryData;
 struct MerkleTreeLeaf;
 struct SignedTreeHead;
 
@@ -28,7 +28,7 @@ struct SignedTreeHead;
 // Transparency test data repository.
 
 // Fills |entry| with test data for an X.509 entry.
-void GetX509CertLogEntry(LogEntry* entry);
+void GetX509CertSignedEntry(SignedEntryData* entry);
 
 // Fills |tree_leaf| with test data for an X.509 Merkle tree leaf.
 void GetX509CertTreeLeaf(MerkleTreeLeaf* tree_leaf);
@@ -38,7 +38,7 @@ void GetX509CertTreeLeaf(MerkleTreeLeaf* tree_leaf);
 std::string GetDerEncodedX509Cert();
 
 // Fills |entry| with test data for a Precertificate entry.
-void GetPrecertLogEntry(LogEntry* entry);
+void GetPrecertSignedEntry(SignedEntryData* entry);
 
 // Fills |tree_leaf| with test data for a Precertificate Merkle tree leaf.
 void GetPrecertTreeLeaf(MerkleTreeLeaf* tree_leaf);