Move some method definitions from header file to .cc file in shared QUIC in order to comply with Ch…

net/quic/test_tools/quic_test_utils.h

Index: net/quic/test_tools/quic_test_utils.h
diff --git a/net/quic/test_tools/quic_test_utils.h b/net/quic/test_tools/quic_test_utils.h
index 4a0a67536d6025e097bddcb45384627a32db55a4..360f70a1752b01cc78bd9f7e74c19eef385d27e1 100644
--- a/net/quic/test_tools/quic_test_utils.h
+++ b/net/quic/test_tools/quic_test_utils.h
@@ -426,7 +426,7 @@ class MockQuicConnection : public QuicConnection {
     QuicConnection::ProcessUdpPacket(self_address, peer_address, packet);
   }
 
-  bool OnProtocolVersionMismatch(QuicVersion version) override { return false; }
+  bool OnProtocolVersionMismatch(QuicVersion version) override;
 
   void ReallySendGoAway(QuicErrorCode error,
                         QuicStreamId last_good_stream_id,
@@ -465,13 +465,8 @@ class MockQuicSession : public QuicSession {
   explicit MockQuicSession(QuicConnection* connection);
   ~MockQuicSession() override;
 
-  QuicCryptoStream* GetMutableCryptoStream() override {
-    return crypto_stream_.get();
-  }
-
-  const QuicCryptoStream* GetCryptoStream() const override {
-    return crypto_stream_.get();
-  }
+  QuicCryptoStream* GetMutableCryptoStream() override;
+  const QuicCryptoStream* GetCryptoStream() const override;
 
   MOCK_METHOD3(OnConnectionClosed,
                void(QuicErrorCode error,
@@ -532,12 +527,8 @@ class MockQuicSpdySession : public QuicSpdySession {
   explicit MockQuicSpdySession(QuicConnection* connection);
   ~MockQuicSpdySession() override;
 
-  QuicCryptoStream* GetMutableCryptoStream() override {
-    return crypto_stream_.get();
-  }
-  const QuicCryptoStream* GetCryptoStream() const override {
-    return crypto_stream_.get();
-  }
+  QuicCryptoStream* GetMutableCryptoStream() override;
+  const QuicCryptoStream* GetCryptoStream() const override;
   const SpdyHeaderBlock& GetWriteHeaders() { return write_headers_; }
 
   // From QuicSession.
@@ -596,10 +587,7 @@ class MockQuicSpdySession : public QuicSpdySession {
                       bool fin,
                       SpdyPriority priority,
                       QuicReferenceCountedPointer<QuicAckListenerInterface>
-                          ack_listener) override {
-    write_headers_ = std::move(headers);
-    return WriteHeadersMock(id, write_headers_, fin, priority, ack_listener);
-  }
+                          ack_listener) override;
   MOCK_METHOD5(
       WriteHeadersMock,
       size_t(QuicStreamId id,